{"id":"GHSA-f6j3-w9v3-cq22","summary":"Parse Server has a session field immutability bypass via falsy-value guard","details":"### Impact\n\nAn authenticated user can bypass the immutability guard on session fields (`expiresAt`, `createdWith`) by sending a null value in a PUT request to the session update endpoint. This allows nullifying the session expiry, making the session valid indefinitely and bypassing configured session length policies.\n\n### Patches\n\nThe truthiness-based guard checks were replaced with key-presence checks that reject any value for protected session fields, including null.\n\n### Workarounds\n\nThere is no known workaround. A `beforeSave` trigger on `_Session` could be used to reject null values for `expiresAt` and `createdWith`.","aliases":["BIT-parse-2026-34574","CVE-2026-34574"],"modified":"2026-04-06T15:27:15.966361294Z","published":"2026-04-01T00:03:19Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-04-01T00:03:19Z","severity":"MODERATE","nvd_published_at":"2026-03-31T16:16:33Z","cwe_ids":["CWE-697"]},"references":[{"type":"WEB","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-f6j3-w9v3-cq22"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34574"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/pull/10347"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/pull/10348"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/commit/90802969fc713b7bc9733d7255c7519a6ed75d21"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/commit/ebccd7fe2708007e62f705ee1c820a6766178777"},{"type":"PACKAGE","url":"https://github.com/parse-community/parse-server"}],"affected":[{"package":{"name":"parse-server","ecosystem":"npm","purl":"pkg:npm/parse-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"9.0.0"},{"fixed":"9.7.0-alpha.14"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-f6j3-w9v3-cq22/GHSA-f6j3-w9v3-cq22.json"}},{"package":{"name":"parse-server","ecosystem":"npm","purl":"pkg:npm/parse-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.6.69"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-f6j3-w9v3-cq22/GHSA-f6j3-w9v3-cq22.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"}]}