Veille CVE
CVE-2026-41263
3.7 FaibleDescription
Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is a timing side-channel vulnerability in Traefik's BasicAuth middleware that allows an attacker to enumerate valid usernames through response-time differences. The variable intended to hold a constant-time fallback secret always resolves to an empty string, causing the constant-time comparison to short-circuit in microseconds rather than performing a full bcrypt evaluation. This restores the original timing oracle and makes it possible to distinguish existing users from non-existing ones by measuring authentication response times. This issue has been patched in versions 2.11.43, 3.6.14, and 3.7.0-rc.2.
Produits concernés
Scores CVSS
| Version | Score | Source | Vecteur |
|---|---|---|---|
| 4.0 | 6.3 Moyenne | security-advisories@github.com | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/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 |
| 3.1 | 3.7 Faible | nvd@nist.gov (NVD) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
Faiblesses (CWE)
Références
- https://github.com/traefik/traefik/releases/tag/v2.11.43 ProductRelease Notes
- https://github.com/traefik/traefik/releases/tag/v3.6.14 ProductRelease Notes
- https://github.com/traefik/traefik/releases/tag/v3.7.0-rc.2 ProductRelease Notes
- https://github.com/traefik/traefik/security/advisories/GHSA-6x2q-h3cr-8j2h PatchVendor Advisory