Auth bypass in Liketrek Trek
CVE-2026-78863
A vulnerability was found in liketrek TREK up to 3.0.22. Impacted is the function loginUser of the file server/src/services/authService.ts of the component Pre-2FA mfa_token Handler. The manipulation results in improper authentication. The attack may be performed from remote. Upgrading to version 3.1.0 is recommended to address this issue. Upgrading the affected component is recommended.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (41.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Liketrek Trek — versions 3.0.0, 3.0.1, 3.0.10
Weakness classification (CWE)
References
- github.com/liketrek/TREK/releases/tag/v3.1.0 (patch)
- github.com/mauriceboe/TREK/security/advisories/GHSA-mjh4-w6fq-54qm (related)
- vuldb.com/cve/CVE-2026-78863 (third-party-advisory)
- vuldb.com/submit/886929 (third-party-advisory)
- vuldb.com/vuln/394939 (technical-description, vdb-entry)
- vuldb.com/vuln/394939/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-78863?
- CVE-2026-78863 is a medium-severity vulnerability in Liketrek Trek, classified under Improper Authentication. CVSS score: 6.3/10. Published 2026-08-25.
- How severe is CVE-2026-78863?
- Medium severity. CVSS v3 base score is 6.3 out of 10.