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CVE-2026-26205

opa-envoy-plugin has an Authorization Bypass via Double-Slash Path Misinterpretation in `input.parsed_path` PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
open-policy-agent / opa-envoy-pluginaffected < 1.13.2-envoy-2

CWE

CWE-863

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.