Description
ApostropheCMS is an open-source Node.js content management system, and uploadfs is its file storage library. Prior to uploadfs 1.28.0, attacker-controlled paths that reach the local backend can contain parent-directory segments that escape the configured upload directory and affect file reads, writes, and deletion on the host filesystem. Exploitability depends on an application exposing the relevant uploadfs operations to untrusted path. This issue is fixed in uploadfs 1.28.0.
References5
- github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07f…
- github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d00…
- github.com/apostrophecms/apostrophe/releases/tag/[email protected]
- github.com/apostrophecms/apostrophe/security/advisories/GHSA-gm…
- github.com/apostrophecms/apostrophe/security/advisories/GHSA-gm…
Metrics
- CVSS 3.1
-
3.3
LOW
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 26 · as of 9 November 2026
- CWE
- CWE-22
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.