CVE-2026-88007
- Source
- https://cve.org/CVERecord?id=CVE-2026-88007
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-88007.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-88007
- Aliases
- Downstream
CGA (6)
openSUSE (2)
- Related
- Published
- 2026-09-10T14:47:28Z
- Modified
- 2026-10-22T10:35:06Z
- Severity
-
- 9.1 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Traefik HTTP/3 Backend NTLM Connection Reuse
- Details
-
Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.0 until 2.11.57 and 3.7.13, the HTTP/3 entrypoint ConnContext does not call service.AddTransportOnContext, so kerberosRoundTripper uses a shared backend transport instead of a transport dedicated to each frontend connection. With HTTP/3 enabled, a backend using connection-bound NTLM or Negotiate authentication, and backend keep-alive, an unrelated client can reuse a backend connection authenticated for a victim, read victim-only data, and act as that victim without the victim credentials. This issue is fixed in 2.11.57 and 3.7.13.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-287", "CWE-863" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88007.json" }- References
-
- https://github.com/traefik/traefik/releases/tag/v2.11.57
- https://github.com/traefik/traefik/releases/tag/v3.7.13
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88007.json
- https://github.com/traefik/traefik/security/advisories/GHSA-qqjf-53cj-pwvv
- https://nvd.nist.gov/vuln/detail/CVE-2026-88007
- https://github.com/traefik/traefik/commit/ff39c47d7459dec9cd8de63c1a4e7aa7315bdc1c
- https://github.com/traefik/traefik/pull/13812
Affected packages
Git / github.com/traefik/traefik
Affected ranges
- Type
- GIT
- Repo
- https://github.com/traefik/traefik
- Events
-
IntroducedFixedIntroducedFixedFixedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*", "range": [ { "introduced": "2.8.2" }, { "fixed": "2.11.56" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*", "range": [ { "introduced": "3.0.0" }, { "fixed": "3.7.12" } ], "source": "CPE_RANGE" }, { "range": [ { "fixed": "ff39c47d7459dec9cd8de63c1a4e7aa7315bdc1c" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v2.11.57", "range": [ { "fixed": "839eb7f48a16849f22762b7e3bdfc58253146cd7" } ], "source": "REFERENCES_TAG" }, { "original_tag": "v3.7.13", "range": [ { "fixed": "fc92cc118a0557a029c7019d5ee06665127b0f13" } ], "source": "REFERENCES_TAG" } ] }