CVE-2026-26205

opa-envoy-plugun is a plugin to enforce OPA policies with Envoy. Versions prior to 1.13.2-envoy-2 have a vulnerability in how the `input.parsed_path` field is constructed. HTTP request paths are treated as full URIs when parsed; interpreting leading path segments prefixed with double slashes (`//`) as authority components, and therefore dropping them from the parsed path. This creates a path interpretation mismatch between authorization policies and backend servers, enabling attackers to bypass access controls by crafting requests where the authorization filter evaluates a different path than the one ultimately served. Version 1.13.2-envoy-2 fixes the issue.

CVSS

No CVSS.

References

Link	Resource
https://github.com/open-policy-agent/opa-envoy-plugin/commit/58c44d4ec408d5852d1d0287599e7d5c5e2bc5c3
https://github.com/open-policy-agent/opa-envoy-plugin/releases/tag/v1.13.2-envoy-2
https://github.com/open-policy-agent/opa-envoy-plugin/security/advisories/GHSA-9f29-v6mm-pw6w

Configurations

No configuration.

History

15 Apr 2026, 00:35

Type	Values Removed	Values Added
Summary		(es) opa-envoy-plugin es un plugin para aplicar políticas OPA con Envoy. Las versiones anteriores a 1.13.2-envoy-2 tienen una vulnerabilidad en cómo se construye el campo 'input.parsed_path'. Las rutas de solicitud HTTP se tratan como URIs completas al ser analizadas; interpretando los segmentos de ruta iniciales prefijados con barras dobles ('//') como componentes de autoridad, y por lo tanto, eliminándolos de la ruta analizada. Esto crea una falta de coincidencia en la interpretación de la ruta entre las políticas de autorización y los servidores backend, permitiendo a los atacantes eludir los controles de acceso mediante la creación de solicitudes donde el filtro de autorización evalúa una ruta diferente a la que finalmente se sirve. La versión 1.13.2-envoy-2 soluciona el problema.

19 Feb 2026, 20:25

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-19 20:25

Updated : 2026-04-15 00:35

NVD link : CVE-2026-26205

Mitre link : CVE-2026-26205

CVE.ORG link : CVE-2026-26205

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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