---
id: CVE-2026-77293
title: TREK is a collaborative travel planner
summary: >-
  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/se…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L'
cwe:
  - CWE-639
  - CWE-862
vendor: mauriceboe
product: TREK
affected:
  - TREK < 3.3.0
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T19:17:16.397'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77293'
references:
  - url: >-
      https://github.com/liketrek/TREK/commit/19064b39176660f3be3a2df198c87949504046e2
    label: security-advisories@github.com
  - url: 'https://github.com/liketrek/TREK/pull/1520'
    label: security-advisories@github.com
  - url: 'https://github.com/liketrek/TREK/releases/tag/v3.3.0'
    label: security-advisories@github.com
  - url: 'https://github.com/liketrek/TREK/security/advisories/GHSA-cjc5-722j-vvmf'
    label: security-advisories@github.com
  - url: 'https://github.com/liketrek/TREK/security/advisories/GHSA-cjc5-722j-vvmf'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-24T18:44:45.227942Z'
ingestedAt: '2026-09-24T18:49:36.725Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.