CVE-2025-66491
Traefik Inverted TLS Verification Logic in ingress-nginx Provider in github.com/traefik/traefik
5.9
MEDIUM
CVSS 3.1
EPSS 0.01%
Description
Traefik Inverted TLS Verification Logic in ingress-nginx Provider in github.com/traefik/traefik
How to fix CVE-2025-66491
To remediate CVE-2025-66491, upgrade the affected package to a fixed version below.
- Go/github.com/traefik/traefik—no fix listed
- —no fix listed
- —upgrade to 3.6.3 or later
- —upgrade to 3.6.3 or later
Is CVE-2025-66491 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0
- from 0
- >= 3.5.0, < 3.6.3
- >= 3.5.0, < 3.6.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |