CVE-2026-77321
- Source
- https://cve.org/CVERecord?id=CVE-2026-77321
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77321.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-77321
- Aliases
-
- GHSA-qvw8-w937-vcmq
- Published
- 2026-09-24T18:04:05Z
- Modified
- 2026-10-28T02:31:12Z
- Severity
-
- 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
- Summary
- TREK MCP trip summary bypasses delegated OAuth read scopes
- Details
-
TREK is a collaborative travel planner. Prior to 3.3.0, the get_trip_summary tool in server/src/mcp/tools/trips.ts is registered for scoped OAuth MCP tokens without requiring trips:read and returns core trip summary data regardless of the delegated scopes. A token granted only an unrelated capability, such as weather:read, can receive trip metadata, member email addresses from server/src/services/tripService.ts, itinerary days, and accommodations for every trip accessible to the token's user. Cross-user trip authorization remains enforced, but the missing scope check defeats the consented least-privilege boundary and exposes trip content and third-party contact information to an MCP client that was not authorized to read it. This issue is fixed in version 3.3.0.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-200", "CWE-284", "CWE-862" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77321.json" }- References
-
- https://github.com/liketrek/TREK/releases/tag/v3.3.0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77321.json
- https://github.com/liketrek/TREK/security/advisories/GHSA-qvw8-w937-vcmq
- https://nvd.nist.gov/vuln/detail/CVE-2026-77321
- https://github.com/liketrek/TREK/commit/19064b39176660f3be3a2df198c87949504046e2
- https://github.com/liketrek/TREK/pull/1520
Affected packages
Git / github.com/liketrek/trek
Affected ranges
- Type
- GIT
- Repo
- https://github.com/liketrek/trek
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "3.3.0" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "19064b39176660f3be3a2df198c87949504046e2" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v3.3.0", "range": [ { "fixed": "f9c992ec9363301762ac00e97747c1dd0fe37d6b" } ], "source": "REFERENCES_TAG" } ] }