Vulnerability · Published May 28, 2026 · Assigned by GitHub_M
CVE-2026-45410Time-based user enumeration in TREK authentication endpoint
Medium 5.3
In plain English
A medium-severity security flaw in TREK from mauriceboe. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).
Official description
TREK is a collaborative travel planner. Prior to 3.0.18, early return on missing user during login flow allowed an attacker to enumerate valid user accounts via response timing discrepancy. When an email address existed in the database, the backend performed a bcrypt password comparison before returning a 401 Unauthorized, adding ~370 ms of latency. When the email did not exist, the backend returned immediately (~10 ms). This ~14× timing difference could be detected without any difference in HTTP status codes or response bodies. This vulnerability is fixed in 3.0.18.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| mauriceboe | TREK | < 3.0.18 |
Weakness: CWE-203, CWE-208 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://github.com/mauriceboe/TREK/security/advisories/GHSA-3552-3c98-x79r x_refsource_CONFIRM
- https://gist.github.com/jubnl/c2402adf85d946c1730867aeecc794de x_refsource_MISC