CVE-2026-118264
CVE-2026-118264 · Echo: Rejected WebSocket upgrades can bypass Echo route-level access controls
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
Echo is a Go web framework. From 4.0.0 until 4.16.1 and 5.4.1, Echo's Proxy middleware selects a raw tunnel from a client WebSocket upgrade request before verifying that the configured upstream accepted the upgrade. If the upstream rejects the upgrade with an ordinary keep-alive response, later HTTP requests on the connection are sent directly to that upstream without passing through Echo's router or route-specific middleware. This can bypass authentication or authorization enforced only by Echo routes, but requires an accessible proxy route, a cooperating rejected-upgrade response, and a target without independent upstream authorization. This issue is fixed in 4.16.1 and 5.4.1.
CVSS 9.1 · Crítica · EPSS 0,4%
- Publicación
- Actualización
Pila tecnológica: system
Productos y versiones afectados
echo
- Versiones
- >= 4.0.0, < 4.16.1: Afectada
- >= 5.0.0, < 5.4.1: Afectada
Sin corrección publicada
golang-github-labstack-echo Debian:12
- Versiones
- 4.11.1-1
- 4.11.1-2
- 4.12.0-1
- 4.2.1-3
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
golang-github-labstack-echo Debian:13
- Versiones
- 4.12.0-1
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
golang-github-labstack-echo Debian:14
- Versiones
- 4.12.0-1
- Intervalos de versiones afectados
- ECOSYSTEM: (−∞, +∞)
Sin corrección publicada
Fuentes originales
- https://github.com/labstack/echo/security/advisories/GHSA-cxf3-9h37-7rr8
- https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaaec
- https://github.com/labstack/echo/commit/3fb0ba7e17645bb65611e2a08875d0a2f65c421f
- https://github.com/labstack/echo/releases/tag/v4.16.1
- https://github.com/labstack/echo/releases/tag/v5.4.1
- https://nvd.nist.gov/vuln/detail/CVE-2026-118264