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Prior to 1.18.0, OpenFGA's OIDC authenticator skipped JWT audience validation when authn.method was set to oidc, authn.oidc.issuer was configured, and authn.oidc.audience w…","description":"OpenFGA is an authorization/permission engine built for developers. Prior to 1.18.0, OpenFGA's OIDC authenticator skipped JWT audience validation when authn.method was set to oidc, authn.oidc.issuer was configured, and authn.oidc.audience was not set, allowing a token minted for an unrelated service by the same identity provider to authenticate to OpenFGA. This issue is fixed in 1.18.0.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","score":6.8,"severity":null}],"references":["https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv","https://github.com/openfga/openfga/commit/44596773b2e62738720ef215bf7fa04352954271","https://github.com/openfga/helm-ch","https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9","https://github.com/openfga/openfga/releases/tag/v1.18.0"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-42710","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jul 9, 2026, 9:06:22 PM","dateUpdated":"Jul 10, 2026, 1:45:39 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. 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Prior to 1.18.0, OpenFGA's OIDC authenticator skipped JWT audience validation when authn.method was set to oidc, authn.oidc.issuer was configured, and authn.oidc.audience was not set, allowing a token minted for an unrelated service by the same identity provider to authenticate to OpenFGA. This issue is fixed in 1.18.0.","state":0,"publishedAt":"2026-07-09T22:17:06.553+00:00","modifiedAt":"2026-07-14T01:28:44.147+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","score":6.8,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":8.1,"severity":"HIGH"}],"references":["https://github.com/openfga/helm-ch","https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9","https://github.com/openfga/openfga/commit/44596773b2e62738720ef215bf7fa04352954271","https://github.com/openfga/openfga/releases/tag/v1.18.0","https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55689","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-287"],"productCriteria":["cpe:2.3:a:openfga:helm_charts:*:*:*:*:*:openfga:*:*","cpe:2.3:a:openfga:openfga:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-07-09T22:17:06.553","lastModified":"2026-07-14T01:28:44.147"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-55689","identifiers":["CVE-2026-55689"]},"retained":false,"historicalAffected":[]},{"revision":"bb787c14bfdb414887a4f2b9fa76564d","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-hcxc-wf8j-23hv","aliases":["CVE-2026-55689","GO-2026-5423"],"title":"OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset","description":"## Description\n\nOpenFGA's OIDC authenticator skipped JWT audience (`aud`) validation when no audience was configured.\nIn deployments where one identity provider issues tokens for multiple services,\na token minted for an unrelated service could authenticate to OpenFGA.\n\n## Preconditions\n\nThis applies if the following preconditions are met:\n\n1. You run OpenFGA with `authn.method` set to `oidc`.\n2. You configured `authn.oidc.issuer` but did **not** set\n   `authn.oidc.audience` (`--authn-oidc-audience` / `OPENFGA_AUTHN_OIDC_AUDIENCE`).\n\n## Fix\n\nUpgrade to OpenFGA 1.18.0 or greater. OpenFGA now refuses to start in `oidc`\nmode unless both `authn.oidc.issuer` and `authn.oidc.audience` are set, and the\n`aud` claim is always validated.\n\n## Acknowledgements\n\nOpenFGA would like to thank https://github.com/0xVijay for the report.","state":0,"publishedAt":"2026-06-19T14:35:35+00:00","modifiedAt":"2026-09-10T03:50:49.7859604+00:00","affected":[{"ecosystem":"Go","name":"github.com/openfga/openfga","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.18.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv","https://nvd.nist.gov/vuln/detail/CVE-2026-55689","https://github.com/openfga/openfga/commit/44596773b2e62738720ef215bf7fa04352954271","https://github.com/openfga/helm-ch","https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9","https://github.com/openfga/openfga","https://github.com/openfga/openfga/releases/tag/v1.18.0"],"sourceUrl":"https://github.com/advisories/GHSA-hcxc-wf8j-23hv","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-hcxc-wf8j-23hv","identifiers":["GHSA-hcxc-wf8j-23hv","CVE-2026-55689","GO-2026-5423"]},"retained":false,"historicalAffected":[]},{"revision":"fe648a30970a431f9e8d8f4ae53fda4a","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5423","aliases":["CVE-2026-55689","GHSA-hcxc-wf8j-23hv"],"title":"OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset in github.com/openfga/openfga","description":"OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset in github.com/openfga/openfga","state":0,"publishedAt":"2026-06-25T22:34:31+00:00","modifiedAt":"2026-06-25T23:01:12.7635598+00:00","affected":[{"ecosystem":"Go","name":"github.com/openfga/openfga","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.18.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5423","license":"OSV · upstream source license applies","key":"osv:GO-2026-5423","identifiers":["GO-2026-5423","CVE-2026-55689","GHSA-hcxc-wf8j-23hv"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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