apostrophecms/apostrophe · Security
ApostropheCMS: 2nd-order prototype pollution via PATCH leading to single-request persistent DoS
- GHSA ID
- GHSA-vmg4-6gfg-83qx
- CVE ID
- CVE-2026-71553
- Severity
- high
- Published
- Updated
- CVSS v4
- 7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Description
The vulnerability is a single-request persistent DoS by submitting e.g. "PATCH /api/v1/article/" with a valid editor session and body of {"toString.call":"x"}, overwriting the global toString function with value x.
Fabian
CWEs
- CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')