Vulnerability Description
ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0, the unauthenticated Rich Text CSV conversion route writes a multipart upload to the system temporary directory before checking its extension and does not remove the staged file when that validation rejects it. Repeated large rejected uploads, using the normal public CSRF cookie, can persistently consume temporary-disk capacity and may disrupt ApostropheCMS and other services that depend on the same partition. This issue is fixed in version 4.33.0.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25
- https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25d
- https://github.com/apostrophecms/apostrophe/releases/tag/[email protected]
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-qhcq-9pm2-c
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-qhcq-9pm2-c
FAQ
What is CVE-2026-113658?
CVE-2026-113658 is a vulnerability with a CVSS score of 7.5 (HIGH). ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0, the unauthenticated Rich Text CSV conversion route writes a multipart upload to the system temporary directory befor...
How severe is CVE-2026-113658?
CVE-2026-113658 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-113658?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.