CVE-2026-40701

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Source
https://cve.org/CVERecord?id=CVE-2026-40701
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40701.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-40701
Aliases
Downstream
Related
Published
2026-05-13T16:16:43.863Z
Modified
2026-06-26T12:05:55.475580912Z
Severity
  • 6.3 (Medium) CVSS_V4 - 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpsslmodule module when the sslverifyclient directive is set to "on" or "optional," and the sslocsp directive is set to "on" or the leaf parameters are configured with a resolver. With this configuration, an unauthenticated attacker can send requests along with conditions beyond its control that may cause a heap-use-after-free error in the NGINX worker process. This vulnerability may result in limited modification of data or the NGINX worker process restarting.

 Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "CPE_RANGE",
            "cpes": [
                "cpe:2.3:a:f5:dos:*:*:*:*:*:nginx:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "4.3.0"
                },
                {
                    "last_affected": "4.7.0"
                }
            ],
            "vendor_product": "f5:dos"
        },
        {
            "source": "CPE_RANGE",
            "cpes": [
                "cpe:2.3:a:f5:nginx_instance_manager:*:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "2.16.0"
                },
                {
                    "last_affected": "2.22.0"
                }
            ],
            "vendor_product": "f5:nginx_instance_manager"
        },
        {
            "source": "CPE_RANGE",
            "cpes": [
                "cpe:2.3:a:f5:nginx_plus:*:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "r32"
                },
                {
                    "last_affected": "r36"
                }
            ],
            "vendor_product": "f5:nginx_plus"
        },
        {
            "source": "CPE_RANGE",
            "cpes": [
                "cpe:2.3:a:f5:waf:*:*:*:*:*:nginx:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "4.9.0"
                },
                {
                    "last_affected": "4.16.0"
                },
                {
                    "introduced": "5.1.0"
                },
                {
                    "last_affected": "5.8.0"
                },
                {
                    "introduced": "5.9.0"
                },
                {
                    "last_affected": "5.12.1"
                }
            ],
            "vendor_product": "f5:waf"
        },
        {
            "source": "CPE_STRING",
            "cpes": [
                "cpe:2.3:a:f5:dos:4.8.0:*:*:*:*:nginx:*:*"
            ],
            "extracted_events": [
                {
                    "last_affected": "4.8.0"
                }
            ],
            "vendor_product": "f5:dos"
        }
    ]
}
References

Affected packages

Git
github.com/nginx/kubernetes-ingress

Affected ranges

Type
GIT
Repo
https://github.com/nginx/kubernetes-ingress
Events
Introduced
33971b8ff54bc55785a7b38c07a21e03bda25080
Last affected
561824f3077b7615c2fa764bd6d8e7a47e184857
Introduced
81bae7d0360fdf277b2d3e355d02e410ee211ef8
Last affected
43349033e28d0b6aa38773ff840deba079654a4f
Introduced
8dfabca757830d0821e86206c2db83044e6696f0
Last affected
cd864d71a5e3b6698b80daee02b2785c4020db10
Database specific 
{
    "cpe": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "3.5.0"
        },
        {
            "last_affected": "3.7.2"
        },
        {
            "introduced": "4.0.0"
        },
        {
            "last_affected": "4.0.1"
        },
        {
            "introduced": "5.0.0"
        },
        {
            "last_affected": "5.4.2"
        }
    ]
}

Affected versions

v4.*
v4.0.0
v4.0.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40701.json"
github.com/nginx/nginx

Affected ranges

Type
GIT
Repo
https://github.com/nginx/nginx
Events
Introduced
87c8507f20eb32e757aa3ef2e709f395f577a7f6
Last affected
6e14e954aaacce9a433d9b07b4653809c7594ab8
Database specific 
{
    "cpe": "cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "1.19.0"
        },
        {
            "last_affected": "1.30.0"
        }
    ]
}

Affected versions

release-1.*
release-1.19.0
release-1.19.1
release-1.19.10
release-1.19.2
release-1.19.3
release-1.19.4
release-1.19.5
release-1.19.6
release-1.19.7
release-1.19.8
release-1.19.9
release-1.21.0
release-1.21.1
release-1.21.2
release-1.21.3
release-1.21.4
release-1.21.5
release-1.21.6
release-1.23.0
release-1.23.1
release-1.23.2
release-1.23.3
release-1.23.4
release-1.25.0
release-1.25.1
release-1.25.2
release-1.25.3
release-1.25.4
release-1.25.5
release-1.27.0
release-1.27.1
release-1.27.2
release-1.27.3
release-1.27.4
release-1.27.5
release-1.29.0
release-1.29.1
release-1.29.2
release-1.29.3
release-1.29.4
release-1.29.5
release-1.29.6
release-1.29.7
release-1.29.8
release-1.30.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40701.json"
github.com/nginx/nginx-gateway-fabric

Affected ranges

Type
GIT
Repo
https://github.com/nginx/nginx-gateway-fabric
Events
Introduced
3a372747333fb1db372af7cf0b18ed7eef7c91f7
Last affected
532db6a20b2912fe397211eef9f8d564d46a4bdd
Introduced
7dad8b31e3f0c3eadce36fed8c276e83e6583d24
Last affected
95a66d8cec0ce98e1985aeab728317c5ba7ec0c6
Database specific 
{
    "cpe": "cpe:2.3:a:f5:nginx_gateway_fabric:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "1.3.0"
        },
        {
            "last_affected": "1.6.2"
        },
        {
            "introduced": "2.0.0"
        },
        {
            "last_affected": "2.6.0"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-40701.json"