{"schemaVersion":3,"id":"CVE-2026-73553","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, When ignore_path_parameters_in_path_matching is enabled, Envoy's router strips the semicolon suffix before matching but the RBAC url_path matcher evaluates the raw path. A downstream request such as /admin;x can therefore miss a DENY rule for /admin while the router still selects the protected /admin backend. The inconsistent canonicalization allows an unauthenticated client to bypass path-based authorization. The relevant scope boundary is that the route option and a path-based RBAC rule must both be present, and the protected route must match after stripping. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.","dates":{"published":"2026-09-21T20:18:47.650Z","modified":"2026-09-22T13:21:23.657Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00507,"percentile":0.42342,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-09-22T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00507,"percentile":0.42342}],"last30":[{"date":"2026-09-22T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00517,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00507,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00507,"percentile":0.42342}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"GITHUB_ENVOYPROXY_ENVOY","name":"Envoy","source":"github","url":"https://github.com/envoyproxy/envoy/issues/7728","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-436","name":"Interpretation Conflict","description":"Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/436.html"}],"affected":[{"vendor":"envoyproxy","product":"envoy","name":"envoy","label":"envoy","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1.36.10","noFixRecorded":false,"fixedIn":null},{"text":"≥ 1.37.0, < 1.37.6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 1.38.0, < 1.38.4","noFixRecorded":false,"fixedIn":null},{"text":"≥ 1.39.0, < 1.39.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.36.10 | ≥ 1.37.0, < 1.37.6 | ≥ 1.38.0, < 1.38.4 | ≥ 1.39.0, < 1.39.1","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"envoy","label":"Envoy","category":"server-app"}},"hubHref":"/vendor/envoyproxy/envoy"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-77x5-xqjg-hprq","label":"github.com/envoyproxy/envoy/security/advisories/GHSA-77x5-xqjg-hprq","hostname":"github.com","tags":["X Refsource CONFIRM","Exploit","Vendor Advisory","Mitigation"]},{"url":"https://github.com/envoyproxy/envoy/commit/0be4a0302ea94a894e470817c2edfbd5ed90d273","label":"github.com/envoyproxy/envoy/commit/0be4a0302ea94a894e470817c2edfbd5ed90d273","hostname":"github.com","tags":["X Refsource MISC","Patch"]},{"url":"https://github.com/envoyproxy/envoy/commit/6a703a375a20e3bf98140ee5f5522c614adee7b6","label":"github.com/envoyproxy/envoy/commit/6a703a375a20e3bf98140ee5f5522c614adee7b6","hostname":"github.com","tags":["X Refsource MISC","Patch"]},{"url":"https://github.com/envoyproxy/envoy/commit/b6ec9b66cc33a415e2fa81a6fa8363cac4772dd1","label":"github.com/envoyproxy/envoy/commit/b6ec9b66cc33a415e2fa81a6fa8363cac4772dd1","hostname":"github.com","tags":["X Refsource MISC","Patch"]},{"url":"https://github.com/envoyproxy/envoy/commit/e6d5fe885409ebb335ed3934a167f0bcfea471f2","label":"github.com/envoyproxy/envoy/commit/e6d5fe885409ebb335ed3934a167f0bcfea471f2","hostname":"github.com","tags":["X Refsource MISC","Patch"]},{"url":"https://github.com/envoyproxy/envoy/releases/tag/v1.36.10","label":"github.com/envoyproxy/envoy/releases/tag/v1.36.10","hostname":"github.com","tags":["X Refsource MISC","Release Notes"]},{"url":"https://github.com/envoyproxy/envoy/releases/tag/v1.37.6","label":"github.com/envoyproxy/envoy/releases/tag/v1.37.6","hostname":"github.com","tags":["X Refsource MISC","Release Notes"]},{"url":"https://github.com/envoyproxy/envoy/releases/tag/v1.38.4","label":"github.com/envoyproxy/envoy/releases/tag/v1.38.4","hostname":"github.com","tags":["X Refsource MISC","Release Notes"]},{"url":"https://github.com/envoyproxy/envoy/releases/tag/v1.39.1","label":"github.com/envoyproxy/envoy/releases/tag/v1.39.1","hostname":"github.com","tags":["X Refsource MISC","Release Notes"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:11630-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:11630-1"]},"timeline":[{"kind":"published","date":"2026-09-21T20:18:47.650Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-22T13:21:23.657Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":40,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T19:12:12.546Z","stale":false,"partial":false}}