{"cve":"CVE-2026-26205","nvd":{"published":"2026-02-19T20:25:43.263","modified":"2026-06-17T10:25:56.370","status":"Deferred","description":"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_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H","score":7.1},"cvss_v3":null,"cwes":["CWE-863"],"references":["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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:23:35.260773158+00:00"},"epss":{"cve":"CVE-2026-26205","score":0.00534,"percentile":0.45081,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-9f29-v6mm-pw6w","url":"https://osv.dev/vulnerability/GHSA-9f29-v6mm-pw6w","summary":"opa-envoy-plugin has an Authorization Bypass via Double-Slash Path Misinterpretation in input.parsed_path","modified":"2026-09-10T03:50:34.621591749Z","packages":[{"ecosystem":"Go","name":"github.com/open-policy-agent/opa-envoy-plugin","purl":"pkg:golang/github.com/open-policy-agent/opa-envoy-plugin","ranges":["<1.13.2-envoy-2"],"fixed":["1.13.2-envoy-2"]}]},{"id":"GO-2026-4506","url":"https://osv.dev/vulnerability/GO-2026-4506","summary":"opa-envoy-plugin has an Authorization Bypass via Double-Slash Path Misinterpretation in input.parsed_path in github.com/open-policy-agent/opa-envoy-plugin","modified":"2026-02-24T22:14:03.198652Z","packages":[{"ecosystem":"Go","name":"github.com/open-policy-agent/opa-envoy-plugin","purl":"pkg:golang/github.com/open-policy-agent/opa-envoy-plugin","ranges":["<1.13.2-envoy-2"],"fixed":["1.13.2-envoy-2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}