VDB
CVE-2026-48491
CVE-2026-48491
PUBLISHED
CVSS 7.800000190734863 HIGH
Traefik: SNICheck ignores wildcard TLSOptions mappings, allowing domain-fronted mTLS bypass
EPSS 0.36% · 28.7th percentile
Risk Scores
CVSS 4.0
7.800000190734863
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
EPSS Score
0.36%
28.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat OpenShift Dev Spaces | |
| Red Hat | Red Hat OpenShift Dev Spaces | |
| alpine | traefik | 0, 0, 0 |
| github.com | traefik/traefik/v2 | 0, 0, 0 |
| Red Hat | Red Hat OpenShift Dev Spaces 3.30 | 1787756799, 1787756799, 1787756799 |
| traefik | traefik | >= 3.7.0, < 3.7.3, >= 3.7.0, < 3.7.3, >= 3.7.0, < 3.7.3 |
| github.com | traefik/traefik/v3 | 3.7.0, 3.7.0, 3.7.0 |
Timeline
- Jun 5, 2026 CVE Published
- Jun 24, 2026 Coalition ESS Score
- Jun 24, 2026 Security Advisory
- Aug 7, 2026 EPSS Score
- Aug 24, 2026 EPSS Score
- Aug 27, 2026 EPSS Score
- Sep 1, 2026 EPSS Score
- Sep 2, 2026 Distribution Patch
- Sep 3, 2026 EPSS Score
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-48491 advisory
- https://github.com/advisories/GHSA-5r4w-85f3-pw66 advisory
- https://github.com/traefik/traefik/security/advisories/GHSA-5r4w-85f3-pw66 url
- https://github.com/traefik/traefik/releases/tag/v3.7.3 url
- https://access.redhat.com/security/cve/CVE-2026-48491 url
- https://bugzilla.redhat.com/show_bug.cgi?id=2491923 url
- https://github.com/traefik/traefik/releases/tag/v2.11.48 url
- https://github.com/traefik/traefik/releases/tag/v3.6.19 url
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48491.json url
- https://access.redhat.com/errata/RHSA-2026:62260 url