CVE-2026-77293 mauriceboe CVE debrief

Who should care

Defenders responsible for TREK instances should assess exposure and apply the fix, as the vulnerability allows for permanent deletion of note-file attachments without requiring the file to belong to the attacker's trip.

Why it matters

CVE-2026-77293 allows authenticated users to delete note-file attachments belonging to another user's trip in TREK, a collaborative travel planner. Defenders should prioritize verifying exposure and applying the fix.

• Authenticated users can permanently delete note-file attachments belonging to another user's trip.
• Sequential identifiers make broad targeting practical.
• Attachment read operations remain trip-scoped and are not affected.

Technical summary

The DELETE /api/trips/:tripId/collab/notes/:noteId/files/:fileId endpoint in TREK 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. This allows an authenticated user to delete note-file attachments belonging to another user's trip. The vulnerability is fixed in version 3.3.0, addressing the authorization issue in the endpoint. Technical details indicate that the vulnerability stems from insufficient authorization checks in the collabService.ts file.

Defensive priority

Defenders should prioritize verifying exposure and applying the fix, as the vulnerability allows for permanent deletion of note-file attachments without requiring the file to belong to the attacker's trip.

Recommended defensive actions

• Verify exposure by checking if the TREK instance is running a version prior to 3.3.0.
• Apply the fix by upgrading to version 3.3.0 or later.
• Monitor for suspicious activity, such as unexpected deletions of note-file attachments.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The vulnerability is described in the CVE record and NVD vulnerability detail page. The issue is fixed in version 3.3.0, as noted in the source references. Evidence of this vulnerability's existence and impact is limited to the information provided in these sources. Defenders should verify the exposure of their TREK instances and apply the fix. The CVE record and NVD detail page provide the primary sources for this vulnerability's details. No additional evidence or claims are made beyond what is provided in these references.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.