Traefik is widely used as an edge/load‑balancer in cloud-native infra; an auth bypass can expose many services and is disruptive.
CVE-2026-85595
Traefik digestAuth authentication bypass allows unauthorized access to protected routes.
Is CVE-2026-85595 being exploited?
Not confirmed. CVE-2026-85595 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-85595?
CVE-2026-85595 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-85595?
Yes. A fix has been recorded for CVE-2026-85595. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-85595 affect?
CVE-2026-85595 affects Traefik < v2.11.55, Traefik digestAuth middleware, Traefik-based Ingress controllers. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-85595?
Upgrade to Traefik v2.11.55+, disable digestAuth or restrict access until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote authentication bypass: attackers can compute valid digest responses with an empty secret to access any digestAuth-protected route.
Immediate action required
- affected< 2.11.55
- affected>= 3.0.0 and <= 3.7.10
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.