What’s Vulnerable › Vulnerabilities

CVE-2026-77293: TREK: Cross-user note-file deletion (IDOR / Broken Access Control)

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-24 · updated 2026-09-25
• Weakness: CWE-639

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.

Affected products

• mauriceboe TREK: before 3.3.0

References

• https://github.com/liketrek/TREK/commit/19064b39176660f3be3a2df198c87949504046e2
• https://github.com/liketrek/TREK/pull/1520
• https://github.com/liketrek/TREK/releases/tag/v3.3.0
• https://github.com/liketrek/TREK/security/advisories/GHSA-cjc5-722j-vvmf
• https://github.com/liketrek/TREK/security/advisories/GHSA-cjc5-722j-vvmf

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