{"id":"GHSA-5v7g-9h8f-8pgg","summary":"Parse Server session creation endpoint allows overwriting server-generated session fields","details":"### Impact\n\nAn authenticated user can overwrite server-generated session fields (`sessionToken`, `expiresAt`, `createdWith`) when creating a session object via `POST /classes/_Session`. This allows bypassing the server's session expiration policy by setting an arbitrary far-future expiration date. It also allows setting a predictable session token value.\n\n### Patches\n\nThe session creation endpoint now filters out server-generated fields from user-supplied data, preventing them from being overwritten.\n\n### Workarounds\n\nAdd a `beforeSave` trigger on the `_Session` class to validate and reject or strip any user-supplied values for `sessionToken`, `expiresAt`, and `createdWith`.","aliases":["BIT-parse-2026-32742","CVE-2026-32742"],"modified":"2026-03-20T12:26:20.148510Z","published":"2026-03-17T18:37:23Z","database_specific":{"cwe_ids":["CWE-915"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-03-17T18:37:23Z","nvd_published_at":"2026-03-18T22:16:25Z"},"references":[{"type":"WEB","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-5v7g-9h8f-8pgg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32742"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/pull/10195"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/pull/10196"},{"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":"9.6.0-alpha.17"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-5v7g-9h8f-8pgg/GHSA-5v7g-9h8f-8pgg.json"}},{"package":{"name":"parse-server","ecosystem":"npm","purl":"pkg:npm/parse-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.6.42"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-5v7g-9h8f-8pgg/GHSA-5v7g-9h8f-8pgg.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"}]}