CVE-2026-114640

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Source
https://cve.org/CVERecord?id=CVE-2026-114640
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114640.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-114640
Aliases
  • GHSA-mwrr-6hp4-pxr6
Published
2026-10-22T01:43:39Z
Modified
2026-10-22T10:46:11Z
Severity
  • 7.0 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N CVSS Calculator
Summary
Traefik v3.7.0 before v3.7.14 mTLS Header Spoofing via Ingress-NGINX HTTP Router
Details

Traefik from v3.7.0 before v3.7.14 contains an authentication bypass vulnerability in its Kubernetes Ingress-NGINX provider that forwards client-supplied Ssl-Client-* headers on the plaintext HTTP router. When ssl-redirect is disabled alongside auth-tls-pass-certificate-to-upstream, unauthenticated attackers can send Ssl-Client-Verify: SUCCESS with a chosen certificate subject and issuer to impersonate mTLS identities.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-290"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114640.json"
}
References

Affected packages

Git / github.com/traefik/traefik

Affected ranges

Type
GIT
Repo
https://github.com/traefik/traefik
Events
Introduced
04aa6bb4f9776f2ba87e5cd181d250e3610e6419
Fixed
3bd7aa32e1b6c41166575529a10fb2346d9eaa2e
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "3.7.0"
                },
                {
                    "fixed":  "3.7.14"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        }
    ]
}

Affected versions

v3.*
v3.7.0
v3.7.1
v3.7.10
v3.7.11
v3.7.12
v3.7.13
v3.7.2
v3.7.3
v3.7.4
v3.7.5
v3.7.6
v3.7.7
v3.7.8
v3.7.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114640.json"