Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
ApostropheCMS versions before 4.33.0 (npm package apostrophe) have a missing authorization flaw in the notification module's PATCH and DELETE REST endpoints, which act on the database without checking authentication or whether the requester owns the notification. An unauthenticated attacker who obtains a valid notification ID can modify or permanently delete another user's notification, which mainly affects integrity. Upgrade to apostrophe 4.33.0 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 |
|---|---|---|---|---|
| 3.7 | Low | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0035, the 28th percentile, on 13 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-vwwx-px9w-crrc
- OSV: GHSA-vwwx-px9w-crrc
- github.com/apostrophecms/apostrophe/security/advisories/GHSA-vwwx-px9w-crrc
- github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce
- github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350
- github.com/apostrophecms/apostrophe
- github.com/apostrophecms/apostrophe/releases/tag/[email protected]