CVE-2025-68621 Details
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.
A critical timing attack vulnerability has been identified in Trilium Notes versions prior to 0.101.0. This vulnerability allows unauthenticated remote attackers to exploit the sync authentication endpoint by recovering HMAC authentication hashes byte-by-byte through statistical timing analysis. The flaw enables complete authentication bypass without knowledge of the password, granting full read and write access to the victim's knowledge base.
Users can update to Trilium Notes version 0.101.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Feb 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/TriliumNext/Trilium/pull/8129 | [email protected] | Issue TrackingPatch |
| https://github.com/TriliumNext/Trilium/security/advisories/GHSA-hxf6-58cx-qq3x | [email protected] | ExploitMitigationPatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-208 | Observable Timing Discrepancy | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| triliumnotes trilium | < 0.101.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Feb 24, 2026 | Initial Analysis | [email protected] |
| Feb 6, 2026 | New CVE Received | [email protected] |