{"id":"CVE-2026-30949","state":"PUBLISHED","title":"Parse Server is missing audience validation in Keycloak authentication adapter","description":"Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.5 and 8.6.18, the Keycloak authentication adapter does not validate the azp (authorized party) claim of Keycloak access tokens against the configured client-id. A valid access token issued by the same Keycloak realm for a different client application can be used to authenticate as any user on the Parse Server that uses the Keycloak adapter. This enables cross-application account takeover in multi-client Keycloak realms. All Parse Server deployments that use the Keycloak authentication adapter with a Keycloak realm that has multiple client applications are affected. This vulnerability is fixed in 9.5.2-alpha.5 and 8.6.18.","publishedAt":"2026-03-10T20:20:12.187Z","updatedAt":"2026-03-10T20:40:49.355Z","severity":{"score":7.6,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["parse-community parse-server"],"affected":[{"vendor":"parse-community","product":"parse-server","versions":[{"version":">= 9.0.0 < 9.5.2-alpha.5","status":"affected"},{"version":"< 8.6.18","status":"affected"}]}],"references":["https://github.com/parse-community/parse-server/security/advisories/GHSA-48mh-j4p5-7j9v","https://github.com/parse-community/parse-server/releases/tag/8.6.18","https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.5"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/30xxx/CVE-2026-30949.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-30949","state":"PUBLISHED","datePublished":"2026-03-10T20:20:12.187Z","dateUpdated":"2026-03-10T20:40:49.355Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-07T17:34:39.980Z"},"containers":{"cna":{"title":"Parse Server is missing audience validation in Keycloak authentication adapter","descriptions":[{"lang":"en","value":"Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.5 and 8.6.18, the Keycloak authentication adapter does not validate the azp (authorized party) claim of Keycloak access tokens against the configured client-id. A valid access token issued by the same Keycloak realm for a different client application can be used to authenticate as any user on the Parse Server that uses the Keycloak adapter. This enables cross-application account takeover in multi-client Keycloak realms. All Parse Server deployments that use the Keycloak authentication adapter with a Keycloak realm that has multiple client applications are affected. This vulnerability is fixed in 9.5.2-alpha.5 and 8.6.18."}],"affected":[{"vendor":"parse-community","product":"parse-server","versions":[{"version":">= 9.0.0 < 9.5.2-alpha.5","status":"affected"},{"version":"< 8.6.18","status":"affected"}]}],"references":[{"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-48mh-j4p5-7j9v","name":"https://github.com/parse-community/parse-server/security/advisories/GHSA-48mh-j4p5-7j9v","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/parse-community/parse-server/releases/tag/8.6.18","name":"https://github.com/parse-community/parse-server/releases/tag/8.6.18","tags":["x_refsource_MISC"]},{"url":"https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.5","name":"https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.5","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.6,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-10T20:20:12.187Z"},"source":{"advisory":"GHSA-48mh-j4p5-7j9v","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-10T20:40:36.292740Z","id":"CVE-2026-30949","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-10T20:40:49.355Z"}}]}}}