CVE-2026-77293 TREK: Cross-user note-file deletion (IDOR / Broken Access Control)
An authenticated user with edit access to any trip can delete note-file attachments belonging to other users' trips due to missing ownership checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77293?
CVE-2026-77293 is a high-severity missing authorization vulnerability in mauriceboe TREK, published on 24 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
TREK is a collaborative travel planner. Prior to 3.3.0, the DELETE /api/trips/:tripId/collab/notes/:noteId/files/:fileId endpoint authorizes an authenticated user against the attacker-controlled tripId but deleteNoteFile in server/src/services/collabService.ts resolves the target only by note and file identifiers without requiring the file to belong to that trip. A user with edit access to any trip can submit identifiers belonging to another user's trip and permanently delete that note-file attachment. Sequential identifiers make broad targeting practical, while attachment read operations remain trip-scoped and are not affected. This issue is fixed in version 3.3.0.
Which versions are affected by CVE-2026-77293?
How do I fix CVE-2026-77293?
No fix has been published for CVE-2026-77293 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-77293 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-77293 exists.
Sources
Also known as GHSA-cjc5-722j-vvmf.