USN-8354-1

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Source
https://ubuntu.com/security/notices/USN-8354-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8354-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-8354-1
Upstream
Related
Published
2026-06-01T13:52:07Z
Modified
2026-06-22T09:31:35.449144109Z
Summary
nginx vulnerabilities
Details

It was discovered that nginx did not properly validate source addresses in the HTTP/3 QUIC module. A remote attacker could possibly use this issue to bypass authorization checks or rate limiting. This issue only affected Ubuntu 25.04 and Ubuntu 25.10. (CVE-2026-40460)

It was discovered that nginx contained a use-after-free vulnerability in the ngxhttpssl_module module when client certificate verification and OCSP validation were enabled. A remote attacker could use this issue to cause nginx to crash, resulting in a denial of service, or possibly modify data in memory. (CVE-2026-40701)

It was discovered that nginx did not properly handle certain proxied responses in the ngxhttpcharset_module module. A remote attacker could possibly use this issue to obtain sensitive information or cause nginx to crash, resulting in a denial of service. (CVE-2026-42934)

It was discovered that nginx did not properly process certain SCGI and uWSGI responses. An attacker able to perform a machine-in-the-middle attack could possibly use this issue to obtain sensitive information or cause nginx to crash, resulting in a denial of service. (CVE-2026-42946)

It was discovered that nginx incorrectly handled certain rewrite rules in the ngxhttprewrite_module module. A remote attacker could use this issue to cause nginx to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-9256)

References

Affected packages

Ubuntu:22.04:LTS / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.0-6ubuntu14.12

Affected versions

1.*
1.18.0-6ubuntu11
1.18.0-6ubuntu12
1.18.0-6ubuntu14
1.18.0-6ubuntu14.1
1.18.0-6ubuntu14.2
1.18.0-6ubuntu14.3
1.18.0-6ubuntu14.4
1.18.0-6ubuntu14.5
1.18.0-6ubuntu14.6
1.18.0-6ubuntu14.7
1.18.0-6ubuntu14.8
1.18.0-6ubuntu14.10
1.18.0-6ubuntu14.11

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-auth-pam"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-cache-purge"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-dav-ext"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-echo"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-fancyindex"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-geoip"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-geoip2"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-headers-more-filter"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-image-filter"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-ndk"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-perl"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-subs-filter"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-uploadprogress"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-upstream-fair"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-http-xslt-filter"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-mail"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-nchan"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-rtmp"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-stream"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-stream-geoip"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "libnginx-mod-stream-geoip2"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "nginx"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "nginx-common"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "nginx-core"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "nginx-extras"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "nginx-full"
        },
        {
            "binary_version": "1.18.0-6ubuntu14.12",
            "binary_name": "nginx-light"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-9256",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-40701",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-42934",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L"
                },
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-42946",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8354-1.json"

Ubuntu:24.04:LTS / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.24.0-2ubuntu7.9

Affected versions

1.*
1.24.0-1ubuntu1
1.24.0-2ubuntu1
1.24.0-2ubuntu2
1.24.0-2ubuntu3
1.24.0-2ubuntu4
1.24.0-2ubuntu6
1.24.0-2ubuntu7
1.24.0-2ubuntu7.1
1.24.0-2ubuntu7.3
1.24.0-2ubuntu7.4
1.24.0-2ubuntu7.5
1.24.0-2ubuntu7.6
1.24.0-2ubuntu7.7
1.24.0-2ubuntu7.8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "libnginx-mod-http-geoip"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "libnginx-mod-http-image-filter"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "libnginx-mod-http-perl"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "libnginx-mod-http-xslt-filter"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "libnginx-mod-mail"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "libnginx-mod-stream"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "libnginx-mod-stream-geoip"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "nginx"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "nginx-common"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "nginx-core"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "nginx-extras"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "nginx-full"
        },
        {
            "binary_version": "1.24.0-2ubuntu7.9",
            "binary_name": "nginx-light"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-9256",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-40701",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L"
                },
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-42934",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L"
                },
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-42946",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8354-1.json"

Ubuntu:25.10 / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.28.0-6ubuntu1.4

Affected versions

1.*
1.26.3-2ubuntu1
1.26.3-3ubuntu1
1.26.3-3ubuntu2
1.26.3-3ubuntu3
1.28.0-3ubuntu1
1.28.0-4ubuntu1
1.28.0-6ubuntu1
1.28.0-6ubuntu1.1
1.28.0-6ubuntu1.2
1.28.0-6ubuntu1.3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "libnginx-mod-http-geoip"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "libnginx-mod-http-image-filter"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "libnginx-mod-http-perl"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "libnginx-mod-http-xslt-filter"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "libnginx-mod-mail"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "libnginx-mod-stream"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "libnginx-mod-stream-geoip"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "nginx"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "nginx-common"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "nginx-core"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "nginx-extras"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "nginx-full"
        },
        {
            "binary_version": "1.28.0-6ubuntu1.4",
            "binary_name": "nginx-light"
        }
    ]
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2026-9256",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-40460",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-40701",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-42934",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-42946",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8354-1.json"

Ubuntu:26.04:LTS / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.28.3-2ubuntu1.2

Affected versions

1.*
1.28.0-6ubuntu1
1.28.1-2ubuntu1
1.28.1-3ubuntu1
1.28.2-2ubuntu1
1.28.3-2ubuntu1
1.28.3-2ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "libnginx-mod-http-geoip"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "libnginx-mod-http-image-filter"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "libnginx-mod-http-perl"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "libnginx-mod-http-xslt-filter"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "libnginx-mod-mail"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "libnginx-mod-stream"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "libnginx-mod-stream-geoip"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "nginx"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "nginx-common"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "nginx-core"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "nginx-extras"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "nginx-full"
        },
        {
            "binary_version": "1.28.3-2ubuntu1.2",
            "binary_name": "nginx-light"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:26.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-9256",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-40460",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-40701",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-42934",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-42946",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H"
                },
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8354-1.json"