CVE catalog
CVE-2026-88009
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.57, and 3.7.13, Traefik accepts a rootless HTTP/1 request target that Go stores in URL.Opaque while leaving URL.Path empty
- Severity
- High · CVSS 8.8
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.44% · Oct 25, 2026
Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.57, and 3.7.13, Traefik accepts a rootless HTTP/1 request target that Go stores in URL.Opaque while leaving URL.Path empty. The rewriteRequestBuilder path evaluates routing, path sanitization, forwardAuth, encodedCharacters, and access logging against a path normalized to / but forwards URL.Opaque verbatim to the backend, allowing cross-vhost routing bypass, path-scoped authorization bypass, and access-log evasion when the backend interprets the opaque target as a path. This issue is fixed in 2.11.57 and 3.7.13.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Go | github.com/traefik/traefik/v3 | Not reported | 3.7.13 | fixed |
| Go | github.com/traefik/traefik/v2 | Not reported | 2.11.57 | fixed |
| Cpe | traefik | Not reported | 3.7.13 | fixed |
| Go | github.com/traefik/traefik | Not reported | Not reported | unknown |
| Go | github.com/traefik/traefik/v2 | Not reported | 2.11.57 | fixed |
| Go | github.com/traefik/traefik/v3 | Not reported | 3.7.13 | fixed |
| Opensuse | traefik | tumbleweed | 3.7.13-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Go | github.com/traefik/traefik/v3 | Go | Not reported | 3.7.13 | Not reported | GHSA-F52W-8J3H-J724 | Not reported |
| Go | github.com/traefik/traefik/v2 | Go | Not reported | 2.11.57 | Not reported | GHSA-F52W-8J3H-J724 | Not reported |
| Cpe | traefik | cpe | Not reported | 3.7.13 | Not reported | NVD-CVE-2026-88009 | Not reported |
| Go | github.com/traefik/traefik/v2 | Go | Not reported | 2.11.57 | Not reported | GO-2026-6465 | Not reported |
| Go | github.com/traefik/traefik/v3 | Go | Not reported | 3.7.13 | Not reported | GO-2026-6465 | Not reported |
| Opensuse | traefik | rpm | tumbleweed | 3.7.13-1.1 | Not reported | OPENSUSE-SU-2026:12076-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_12076-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-88009]
- [https://osv.dev/vulnerability/GHSA-f52w-8j3h-j724]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:12076-1]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88009.json]
[FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]