CVE-2026-114637

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Source

https://cve.org/CVERecord?id=CVE-2026-114637

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114637.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-114637

Aliases

GHSA-53qr-784g-cj35

Published

2026-10-22T01:43:37Z

Modified

2026-10-22T10:46:03Z

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 v3.2.0 before v3.7.14 FastProxy NTLM/Negotiate Connection Pool Identity Leak

Details

Traefik from v3.2.0 before v3.7.14 contains an authentication bypass vulnerability in the experimental FastProxy connection pool, which fails to pin NTLM/Negotiate-authenticated backend connections to their frontend connection. Unauthenticated clients can be handed a pooled keep-alive backend connection where a victim completed an NTLM or Negotiate handshake, letting them read victim data and act as that victim.

Database specific

{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-488"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114637.json"
}

References

Affected packages

Git / github.com/traefik/traefik

Affected ranges

Type

GIT

Repo

https://github.com/traefik/traefik

Events

Introduced

25caa72c0972fcb829276ebf5a41ef0263fa4a6f

Fixed

3bd7aa32e1b6c41166575529a10fb2346d9eaa2e

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "3.2.0"
                },
                {
                    "fixed":  "3.7.14"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114637.json"