Vulnerability in Traefik
CVE-2026-41181
Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.44, 3.6.15, and 3.7.0-rc.3, there is an information disclosure vulnerability in Traefik's errors (custom error pages) middleware. When the backend returns a response matchin…
EPSS: 0.000 (8.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N.
Affected products
- Traefik — versions 3.7.0, < 2.11.43, >= 3.0.0-beta1, < 3.6.14
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Patch, Mitigation, Vendor Advisory)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-41181?
- CVE-2026-41181 is a medium-severity vulnerability in Traefik, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 5.8/10. Published 2026-05-15.
- How severe is CVE-2026-41181?
- Medium severity. CVSS v3 base score is 5.8 out of 10.