Vulnerability in Triliumnext Trilium
CVE-2025-68621
Trilium Notes is an open-source, cross-platform hierarchical note taking application with focus on building large personal knowledge bases. Prior to 0.101.0, a critical timing attack vulnerability in Trilium's sync authentication endpoint allows unauthenticated remote attackers to recover HMAC authentication hashes byte-by-byte through statistical timing analysis. This enables complete authentication bypass without password knowledge, granting full read/write access to victim's knowledge base. This vulnerability is fixed in 0.101.0.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (43.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Triliumnext Trilium — versions < 0.101.0
- Triliumnotes Trilium
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/TriliumNext/Trilium/security/advisories/GHSA-hxf6-58cx-qq3x (Exploit, Patch, Mitigation, Vendor Advisory)
- github.com/TriliumNext/Trilium/pull/8129 (Patch, Issue Tracking)
Frequently asked questions
- What is CVE-2025-68621?
- CVE-2025-68621 is a high-severity vulnerability in Triliumnext Trilium, classified under CWE-208. CVSS score: 7.4/10. Published 2026-02-06.
- How severe is CVE-2025-68621?
- High severity. CVSS v3 base score is 7.4 out of 10.
- Is CVE-2025-68621 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.