Traefik versions before v2.11.55 and versions v3.0.0 through v3.7.10 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute a valid digest response using the empty secret and arbitrary credentials to bypass authentication on any digestAuth-protected route without a valid username or password.
Metrics
Affected Vendors & Products
References
History
Sat, 05 Sep 2026 10:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Traefik versions before v2.11.55 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute a valid digest response using the empty secret and arbitrary credentials to bypass authentication on any digestAuth-protected route without a valid username or password. | Traefik versions before v2.11.55 and versions v3.0.0 through v3.7.10 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute a valid digest response using the empty secret and arbitrary credentials to bypass authentication on any digestAuth-protected route without a valid username or password. |
| Title | Traefik before v2.11.55 Authentication Bypass via digestAuth | Traefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuth |
Fri, 04 Sep 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Fri, 04 Sep 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Traefik versions before v2.11.55 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute a valid digest response using the empty secret and arbitrary credentials to bypass authentication on any digestAuth-protected route without a valid username or password. | |
| Title | Traefik before v2.11.55 Authentication Bypass via digestAuth | |
| First Time appeared |
Traefik
Traefik traefik |
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| Weaknesses | CWE-287 | |
| CPEs | cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Traefik
Traefik traefik |
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| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-09-04T11:29:59.426Z
Updated: 2026-09-05T10:28:14.403Z
Reserved: 2026-09-04T10:59:00.162Z
Link: CVE-2026-85595
Updated: 2026-09-04T13:56:18.601Z
Status : Awaiting Analysis
Published: 2026-09-04T12:17:22.960
Modified: 2026-09-08T20:10:30.270
Link: CVE-2026-85595
No data.