CVE-2025-68621: Triliumnotes Trilium

High severity, CVSS 7.4. EPSS: 0.6% chance of exploitation in the next 30 days.

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

• Triliumnotes Trilium: before 0.101.0 (fixed in 0.101.0)

Published 2026-02-06. Last modified 2026-06-17.