USN-8398-4

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Source

https://ubuntu.com/security/notices/USN-8398-4

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8398-4.json

JSON Data

https://api.test.osv.dev/v1/vulns/USN-8398-4

Upstream

CVE-2026-49975

UBUNTU-CVE-2026-49975

Published

2026-07-02T12:03:17Z

Modified

2026-07-02T22:49:27.237907386Z

Summary

nginx vulnerability

Details

USN-8398-3 fixed a vulnerability in nginx. This update provides the corresponding fix for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.

Original advisory details:

It was discovered that nginx incorrectly handled certain cookie headers in the HTTP/2 implementation. A remote attacker could possibly use this issue to cause nginx to consume excessive resources, resulting in a denial of service.

References

Affected packages

Ubuntu:Pro:14.04:LTS / nginx

Package

Name: nginx
Purl: pkg:deb/ubuntu/nginx?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.4.6-1ubuntu3.9+esm8

Affected versions

1.*

1.4.1-3ubuntu1

1.4.3-2ubuntu1

1.4.4-1ubuntu1

1.4.4-2ubuntu1

1.4.4-4ubuntu1

1.4.5-1ubuntu1

1.4.6-1ubuntu2

1.4.6-1ubuntu3

1.4.6-1ubuntu3.1

1.4.6-1ubuntu3.2

1.4.6-1ubuntu3.3

1.4.6-1ubuntu3.4

1.4.6-1ubuntu3.5

1.4.6-1ubuntu3.6

1.4.6-1ubuntu3.7

1.4.6-1ubuntu3.8

1.4.6-1ubuntu3.9

1.4.6-1ubuntu3.9+esm1

1.4.6-1ubuntu3.9+esm2

1.4.6-1ubuntu3.9+esm3

1.4.6-1ubuntu3.9+esm4

1.4.6-1ubuntu3.9+esm5

1.4.6-1ubuntu3.9+esm6

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1.4.6-1ubuntu3.9+esm8",
            "binary_name": "nginx"
        },
        {
            "binary_version": "1.4.6-1ubuntu3.9+esm8",
            "binary_name": "nginx-common"
        },
        {
            "binary_name": "nginx-core",
            "binary_version": "1.4.6-1ubuntu3.9+esm8"
        },
        {
            "binary_version": "1.4.6-1ubuntu3.9+esm8",
            "binary_name": "nginx-extras"
        },
        {
            "binary_name": "nginx-full",
            "binary_version": "1.4.6-1ubuntu3.9+esm8"
        },
        {
            "binary_version": "1.4.6-1ubuntu3.9+esm8",
            "binary_name": "nginx-light"
        },
        {
            "binary_version": "1.4.6-1ubuntu3.9+esm8",
            "binary_name": "nginx-naxsi"
        },
        {
            "binary_name": "nginx-naxsi-ui",
            "binary_version": "1.4.6-1ubuntu3.9+esm8"
        }
    ],
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:14.04:LTS",
    "cves": []
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8398-4.json"

Ubuntu:Pro:16.04:LTS / nginx

Package

Name: nginx
Purl: pkg:deb/ubuntu/nginx?arch=source&distro=esm-infra-legacy%2Fxenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.10.3-0ubuntu0.16.04.5+esm9

Affected versions

1.*

1.9.3-1ubuntu1

1.9.6-2ubuntu1

1.9.6-2ubuntu2

1.9.9-0ubuntu1

1.9.9-1ubuntu1

1.9.10-0ubuntu1

1.9.10-1ubuntu1

1.9.11-0ubuntu1

1.9.11-0ubuntu2

1.9.12-0ubuntu1

1.9.13-0ubuntu1

1.9.14-0ubuntu1

1.9.15-0ubuntu1

1.10.0-0ubuntu0.16.04.1

1.10.0-0ubuntu0.16.04.2

1.10.0-0ubuntu0.16.04.3

1.10.0-0ubuntu0.16.04.4

1.10.3-0ubuntu0.16.04.1

1.10.3-0ubuntu0.16.04.2

1.10.3-0ubuntu0.16.04.3

1.10.3-0ubuntu0.16.04.4

1.10.3-0ubuntu0.16.04.5

1.10.3-0ubuntu0.16.04.5+esm1

1.10.3-0ubuntu0.16.04.5+esm2

1.10.3-0ubuntu0.16.04.5+esm3

1.10.3-0ubuntu0.16.04.5+esm4

1.10.3-0ubuntu0.16.04.5+esm5

1.10.3-0ubuntu0.16.04.5+esm6

1.10.3-0ubuntu0.16.04.5+esm7

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm9",
            "binary_name": "nginx"
        },
        {
            "binary_name": "nginx-common",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm9"
        },
        {
            "binary_name": "nginx-core",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm9"
        },
        {
            "binary_name": "nginx-extras",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm9"
        },
        {
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm9",
            "binary_name": "nginx-full"
        },
        {
            "binary_name": "nginx-light",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm9"
        }
    ],
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:16.04:LTS",
    "cves": []
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8398-4.json"

Ubuntu:Pro:18.04:LTS / nginx

Package

Name: nginx
Purl: pkg:deb/ubuntu/nginx?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.14.0-0ubuntu1.11+esm4

Affected versions

1.*

1.12.1-0ubuntu2

1.13.6-2ubuntu1

1.13.6-2ubuntu2

1.13.10-1ubuntu1

1.13.12-0ubuntu1

1.14.0-0ubuntu1

1.14.0-0ubuntu1.1

1.14.0-0ubuntu1.2

1.14.0-0ubuntu1.3

1.14.0-0ubuntu1.4

1.14.0-0ubuntu1.5

1.14.0-0ubuntu1.6

1.14.0-0ubuntu1.7

1.14.0-0ubuntu1.9

1.14.0-0ubuntu1.10

1.14.0-0ubuntu1.11

1.14.0-0ubuntu1.11+esm1

1.14.0-0ubuntu1.11+esm2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libnginx-mod-http-auth-pam",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_version": "1.14.0-0ubuntu1.11+esm4",
            "binary_name": "libnginx-mod-http-cache-purge"
        },
        {
            "binary_name": "libnginx-mod-http-dav-ext",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_name": "libnginx-mod-http-echo",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_name": "libnginx-mod-http-fancyindex",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_name": "libnginx-mod-http-geoip",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_name": "libnginx-mod-http-headers-more-filter",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_name": "libnginx-mod-http-image-filter",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_name": "libnginx-mod-http-lua",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_name": "libnginx-mod-http-ndk",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_name": "libnginx-mod-http-perl",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_version": "1.14.0-0ubuntu1.11+esm4",
            "binary_name": "libnginx-mod-http-subs-filter"
        },
        {
            "binary_version": "1.14.0-0ubuntu1.11+esm4",
            "binary_name": "libnginx-mod-http-uploadprogress"
        },
        {
            "binary_version": "1.14.0-0ubuntu1.11+esm4",
            "binary_name": "libnginx-mod-http-upstream-fair"
        },
        {
            "binary_version": "1.14.0-0ubuntu1.11+esm4",
            "binary_name": "libnginx-mod-http-xslt-filter"
        },
        {
            "binary_version": "1.14.0-0ubuntu1.11+esm4",
            "binary_name": "libnginx-mod-mail"
        },
        {
            "binary_name": "libnginx-mod-nchan",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_version": "1.14.0-0ubuntu1.11+esm4",
            "binary_name": "libnginx-mod-rtmp"
        },
        {
            "binary_name": "libnginx-mod-stream",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_name": "nginx",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_name": "nginx-common",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        },
        {
            "binary_version": "1.14.0-0ubuntu1.11+esm4",
            "binary_name": "nginx-core"
        },
        {
            "binary_version": "1.14.0-0ubuntu1.11+esm4",
            "binary_name": "nginx-extras"
        },
        {
            "binary_version": "1.14.0-0ubuntu1.11+esm4",
            "binary_name": "nginx-full"
        },
        {
            "binary_name": "nginx-light",
            "binary_version": "1.14.0-0ubuntu1.11+esm4"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:18.04:LTS",
    "cves": []
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8398-4.json"

Ubuntu:Pro:20.04:LTS / nginx

Package

Name: nginx
Purl: pkg:deb/ubuntu/nginx?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.18.0-0ubuntu1.7+esm3

Affected versions

1.*

1.16.1-0ubuntu2

1.16.1-0ubuntu3

1.17.5-0ubuntu1

1.17.6-0ubuntu1

1.17.7-0ubuntu1

1.17.8-0ubuntu1

1.17.8-0ubuntu2

1.17.8-0ubuntu3

1.17.9-0ubuntu1

1.17.9-0ubuntu2

1.17.9-0ubuntu3

1.17.10-0ubuntu1

1.18.0-0ubuntu1

1.18.0-0ubuntu1.2

1.18.0-0ubuntu1.3

1.18.0-0ubuntu1.4

1.18.0-0ubuntu1.5

1.18.0-0ubuntu1.6

1.18.0-0ubuntu1.7

1.18.0-0ubuntu1.7+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libnginx-mod-http-auth-pam",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "libnginx-mod-http-cache-purge",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_version": "1.18.0-0ubuntu1.7+esm3",
            "binary_name": "libnginx-mod-http-dav-ext"
        },
        {
            "binary_name": "libnginx-mod-http-echo",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "libnginx-mod-http-fancyindex",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_version": "1.18.0-0ubuntu1.7+esm3",
            "binary_name": "libnginx-mod-http-geoip"
        },
        {
            "binary_name": "libnginx-mod-http-geoip2",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "libnginx-mod-http-headers-more-filter",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_version": "1.18.0-0ubuntu1.7+esm3",
            "binary_name": "libnginx-mod-http-image-filter"
        },
        {
            "binary_name": "libnginx-mod-http-lua",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "libnginx-mod-http-ndk",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "libnginx-mod-http-perl",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "libnginx-mod-http-subs-filter",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "libnginx-mod-http-uploadprogress",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "libnginx-mod-http-upstream-fair",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "libnginx-mod-http-xslt-filter",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_version": "1.18.0-0ubuntu1.7+esm3",
            "binary_name": "libnginx-mod-mail"
        },
        {
            "binary_name": "libnginx-mod-nchan",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "libnginx-mod-rtmp",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "libnginx-mod-stream",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_version": "1.18.0-0ubuntu1.7+esm3",
            "binary_name": "nginx"
        },
        {
            "binary_name": "nginx-common",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_name": "nginx-core",
            "binary_version": "1.18.0-0ubuntu1.7+esm3"
        },
        {
            "binary_version": "1.18.0-0ubuntu1.7+esm3",
            "binary_name": "nginx-extras"
        },
        {
            "binary_version": "1.18.0-0ubuntu1.7+esm3",
            "binary_name": "nginx-full"
        },
        {
            "binary_version": "1.18.0-0ubuntu1.7+esm3",
            "binary_name": "nginx-light"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:20.04:LTS",
    "cves": []
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8398-4.json"