{"id":"CVE-2026-33527","state":"PUBLISHED","title":"Parse Server: Session update endpoint allows overwriting server-generated session fields","description":"Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.57 and 9.6.0-alpha.48, an authenticated user can overwrite server-generated session fields such as expiresAt and createdWith when updating their own session via the REST API. This allows bypassing the server's configured session lifetime policy, making a session effectively permanent. This issue has been patched in versions 8.6.57 and 9.6.0-alpha.48.","publishedAt":"2026-03-24T18:22:44.613Z","updatedAt":"2026-03-24T20:36:39.104Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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":"< 8.6.57","status":"affected"},{"version":">= 9.0.0, < 9.6.0-alpha.48","status":"affected"}]}],"references":["https://github.com/parse-community/parse-server/security/advisories/GHSA-jc39-686j-wp6q","https://github.com/parse-community/parse-server/pull/10263","https://github.com/parse-community/parse-server/pull/10264","https://github.com/parse-community/parse-server/commit/26b628c8fb3cc79ea955374769eebcff6f8a8a73","https://github.com/parse-community/parse-server/commit/ea68fc0b22a6056c9675149469ff57817f7cf984"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/33xxx/CVE-2026-33527.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33527","state":"PUBLISHED","datePublished":"2026-03-24T18:22:44.613Z","dateUpdated":"2026-03-24T20:36:39.104Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-20T18:05:11.830Z"},"containers":{"cna":{"title":"Parse Server: Session update endpoint allows overwriting server-generated session fields","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 versions 8.6.57 and 9.6.0-alpha.48, an authenticated user can overwrite server-generated session fields such as expiresAt and createdWith when updating their own session via the REST API. This allows bypassing the server's configured session lifetime policy, making a session effectively permanent. This issue has been patched in versions 8.6.57 and 9.6.0-alpha.48."}],"affected":[{"vendor":"parse-community","product":"parse-server","versions":[{"version":"< 8.6.57","status":"affected"},{"version":">= 9.0.0, < 9.6.0-alpha.48","status":"affected"}]}],"references":[{"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-jc39-686j-wp6q","name":"https://github.com/parse-community/parse-server/security/advisories/GHSA-jc39-686j-wp6q","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/parse-community/parse-server/pull/10263","name":"https://github.com/parse-community/parse-server/pull/10263","tags":["x_refsource_MISC"]},{"url":"https://github.com/parse-community/parse-server/pull/10264","name":"https://github.com/parse-community/parse-server/pull/10264","tags":["x_refsource_MISC"]},{"url":"https://github.com/parse-community/parse-server/commit/26b628c8fb3cc79ea955374769eebcff6f8a8a73","name":"https://github.com/parse-community/parse-server/commit/26b628c8fb3cc79ea955374769eebcff6f8a8a73","tags":["x_refsource_MISC"]},{"url":"https://github.com/parse-community/parse-server/commit/ea68fc0b22a6056c9675149469ff57817f7cf984","name":"https://github.com/parse-community/parse-server/commit/ea68fc0b22a6056c9675149469ff57817f7cf984","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-24T18:22:44.613Z"},"source":{"advisory":"GHSA-jc39-686j-wp6q","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-24T20:36:32.237013Z","id":"CVE-2026-33527","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-24T20:36:39.104Z"}}]}}}