CVE-2026-113658
ApostropheCMS: Unauthenticated CSV import requests leave rejected uploads in the system temporary directory
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-400 CWE-459 CWE-770 |
| Vendor | apostrophecms |
| Product | apostrophe |
| Published | Oct 20, 2026 |
| Last Updated | Oct 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
apostrophecms / apostrophe
< 4.33.0
References
github.com: https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-qhcq-9pm2-c9w9 github.com: https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce github.com: https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350 github.com: https://github.com/apostrophecms/apostrophe/releases/tag/[email protected]