Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. If the Parse Server option allowCustomObjectId: true is set, an attacker that is allowed to create a new user can set a custom object ID for that new user that exploits the vulnerability and acquires privileges of a specific role. This vulnerability is fixed in 6.5.9 and 7.3.0.
https://github.com/parse-community/parse-server/security/advisories/GHSA-8xq9-g7ch-35hg
https://github.com/parse-community/parse-server/pull/9318
https://github.com/parse-community/parse-server/pull/9317
https://github.com/parse-community/parse-server/commit/1bfbccf9ee7ea77533b2b2aa7c4c69f3bd35e66f
https://github.com/parse-community/parse-server/commit/13ee52f0d19ef3a3524b3d79aea100e587eb3cfc
Published: 2024-10-04
Updated: 2026-02-25
Base Score: 8.5
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N
Severity: High
Base Score: 8.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Severity: High
Base Score: 8.6
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00141