CVE-2026-85595
9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| traefik | traefik | 0 < 2.11.55 | affected |
| traefik | traefik | 2.11.55 | unaffected |
| traefik | traefik | 3.0.0 <= 3.7.10 | affected |
Weaknesses
- CWE-287: Improper Authentication
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://github.com/traefik/traefik/security/advisories/GHSA-5w68-77r2-r64c
- https://www.vulncheck.com/advisories/traefik-before-2.11.55-authentication-bypass-via-digestauth
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.