| Summary | 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 an authentication bypass vulnerability in Traefik's ForwardAuth middleware when trustForwardHeader=false is configured and Traefik is deployed behind a trusted upstream proxy. This issue has been patched in versions 2.11.43, 3.6.14, and 3.7.0-rc.2. |
|---|---|
| Publication Date | May 1, 2026, 6:16 a.m. |
| Registration Date | May 2, 2026, 4:06 a.m. |
| Last Update | May 2, 2026, 2:45 a.m. |
| CVSS3.1 : CRITICAL | |
| スコア | 10.0 |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
| 攻撃元区分(AV) | ネットワーク |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃に必要な特権レベル(PR) | 不要 |
| 利用者の関与(UI) | 不要 |
| 影響の想定範囲(S) | 変更あり |
| 機密性への影響(C) | 高 |
| 完全性への影響(I) | 高 |
| 可用性への影響(A) | なし |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | 2.11.43 | ||||
| cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | 3.0.0 | 3.6.14 | |||
| cpe:2.3:a:traefik:traefik:3.7.0:ea1:*:*:*:*:*:* | |||||
| cpe:2.3:a:traefik:traefik:3.7.0:ea2:*:*:*:*:*:* | |||||
| cpe:2.3:a:traefik:traefik:3.7.0:ea3:*:*:*:*:*:* | |||||
| cpe:2.3:a:traefik:traefik:3.7.0:rc1:*:*:*:*:*:* | |||||