Unrated severityNVD Advisory· Published Feb 6, 2026· Updated Feb 9, 2026
Trilium Notes has a Timing Attack Vulnerability in /api/login/sync
CVE-2025-68621
Description
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.
Affected products
1- Range: < 0.101.0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- github.com/TriliumNext/Trilium/pull/8129mitrex_refsource_MISC
- github.com/TriliumNext/Trilium/security/advisories/GHSA-hxf6-58cx-qq3xmitrex_refsource_CONFIRM
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