CVE-2026-71326
- Source
- https://cve.org/CVERecord?id=CVE-2026-71326
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71326.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-71326
- Aliases
- Downstream
openSUSE (1)
SUSE (1)
- Related
- Published
- 2026-08-06T16:34:23Z
- Modified
- 2026-10-28T02:31:05Z
- Severity
-
- 2.1 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Traefik: BasicAuth singleflight key collision allows authenticated identity spoofing
- Details
-
Traefik is an open source HTTP reverse proxy and load balancer. From 3.6.11 until 3.6.25 and 3.7.10, Traefik's BasicAuth middleware in pkg/middlewares/auth/basic_auth.go deduplicates concurrent password checks with a singleflight key built from the delimiter-free concatenation of password and secret, allowing an attacker who has a valid credential and the stored hash to authenticate as an unconfigured username when headerField trusts the forwarded identity. This issue is fixed in 3.6.25 and 3.7.10.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-287" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71326.json" }- References
-
- https://github.com/traefik/traefik/releases/tag/v3.6.25
- https://github.com/traefik/traefik/releases/tag/v3.7.10
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71326.json
- https://github.com/traefik/traefik/security/advisories/GHSA-6765-c87h-8mrf
- https://nvd.nist.gov/vuln/detail/CVE-2026-71326
- https://github.com/traefik/traefik/commit/b5ace8eb5d6779980567f5e75efd2d9e08b7e350
- https://github.com/traefik/traefik/pull/13572
Affected packages
Git / github.com/traefik/traefik
Affected ranges
- Type
- GIT
- Repo
- https://github.com/traefik/traefik
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*", "range": [ { "introduced": "3.6.11" }, { "fixed": "3.6.25" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*", "range": [ { "introduced": "3.7.0" }, { "fixed": "3.7.10" } ], "source": "CPE_RANGE" }, { "range": [ { "fixed": "b5ace8eb5d6779980567f5e75efd2d9e08b7e350" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v3.6.25", "range": [ { "fixed": "4b18b24b0b002dcc80e0640c6088a87d813de29a" } ], "source": "REFERENCES_TAG" }, { "original_tag": "v3.7.10", "range": [ { "fixed": "2a2349356c01b1b1f7ecddb0c17b30c97f5241e7" } ], "source": "REFERENCES_TAG" } ] }