Disclosure 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.
Source-reported weakness categories
CWE-287
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2026-85595
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| traefik | traefik | * {"versionStartIncluding":"3.0.0","versionEndExcluding":"3.7.11"} |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Exploit, Mitigation, Patch, Vendor Advisory
- www.vulncheck.com — Third Party Advisory
PUBLISHED 2026-09-04T08:17:22-04:00
MODIFIED 2026-10-08T12:17:55-04:00
INGESTED 2026-10-10T20:50:36-04:00