Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The uploadfs package, the local storage backend of ApostropheCMS, is vulnerable in versions before 1.28.0 because it does not sanitize user-supplied paths, allowing directory traversal outside the uploads directory. The source says an attacker can use crafted path sequences to read, write, or delete arbitrary files on the host, though the details of the required access level are not stated in the input. The fix is to upgrade uploadfs to version 1.28.0 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 3.3 | Low | 3.1 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0033, the 26th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 13:33 UTC First seen by agentprime
- 31 Oct 2026, 13:33 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-gmfx-5g6x-rr72
- OSV: GHSA-gmfx-5g6x-rr72
- github.com/apostrophecms/apostrophe/security/advisories/GHSA-gmfx-5g6x-rr72
- github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce
- github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350
- github.com/apostrophecms/apostrophe
- github.com/apostrophecms/apostrophe/releases/tag/[email protected]