{"id":"GHSA-4263-jgmp-7pf4","summary":"Parse Server's Cloud function dispatch crashes server via prototype chain traversal","details":"### Impact\n\nRemote clients can crash the Parse Server process by calling a cloud function endpoint with a crafted function name that traverses the JavaScript prototype chain of a registered cloud function handler, causing a stack overflow.\n\n### Patches\n\nThe fix restricts property lookups during cloud function name resolution to own properties only, preventing prototype chain traversal from stored function handlers.\n\n### Workarounds\n\nThere is no known workaround.","aliases":["BIT-parse-2026-32886","CVE-2026-32886"],"modified":"2026-03-20T12:26:16.149865Z","published":"2026-03-17T17:58:08Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-03-17T17:58:08Z","nvd_published_at":"2026-03-18T22:16:25Z","cwe_ids":["CWE-1321"],"severity":"HIGH"},"references":[{"type":"WEB","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-4263-jgmp-7pf4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32886"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/pull/10210"},{"type":"WEB","url":"https://github.com/parse-community/parse-server/pull/10211"},{"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.24"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-4263-jgmp-7pf4/GHSA-4263-jgmp-7pf4.json"}},{"package":{"name":"parse-server","ecosystem":"npm","purl":"pkg:npm/parse-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.6.47"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-4263-jgmp-7pf4/GHSA-4263-jgmp-7pf4.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}