{"id":"CVE-2026-121965","published":"2026-11-04T16:17:49.883","lastModified":"2026-11-04T19:17:38.207","description":"Parse Server before 8.6.113 and 9.0.0 before 9.10.6-alpha.5 contains a prototype pollution vulnerability when building objects for Cloud Code triggers and LiveQuery, where a dot notation key whose intermediate segment resolves through an inherited member writes onto a process-wide built-in. Clients with write access to an object in a class with a trigger or LiveQuery can corrupt a built-in function, making unrelated requests fail until restart and denying service to all clients and hosted applications.","cvssScore":5.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-1321"],"vendors":[],"products":[],"references":[{"url":"https://github.com/parse-community/parse-server/pull/10810","tags":[]},{"url":"https://github.com/parse-community/parse-server/pull/10811","tags":[]},{"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-95hp-82c6-25q5","tags":[]},{"url":"https://www.vulncheck.com/advisories/parse-server-before-8.6.113-and-9.10.6-alpha.5-prototype-pollution-via-dot-notation-key","tags":[]}],"exploitRefs":[{"url":"https://github.com/parse-community/parse-server/pull/10810","tags":[]},{"url":"https://github.com/parse-community/parse-server/pull/10811","tags":[]},{"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-95hp-82c6-25q5","tags":[]}],"hasPoc":true,"ai":null}