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TI-2025-33488 Aliases CVE-2025-53544

Trilium Notes is Vulnerable to Brute-force Protection Bypass via Initial Sync Seed Retrieval

Priority HIGH 72CWE-307Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-307.

Summary

Trilium Notes is an open-source, cross-platform hierarchical note taking application with focus on building large personal knowledge bases. In versions below 0.97.0, a brute-force protection bypass in the initial sync seed retrieval endpoint allows unauthenticated attackers to guess the login password without triggering rate limiting. Trilium is a single-user app without a username requirement, and brute-force protection bypass makes exploitation much more feasible. Multiple features provided by Trilium (e.g. MFA, share notes, custom request handler) indicate that Trilium can be exposed to the internet. This is fixed in version 0.97.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00418 36th percentileScored 2026-11-07
Fix Fixed Trilium (TriliumNext): 0.97.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TriliumNextTriliumbefore 0.97.00.97.0Patch availableCNA
  • Trilium VendorTriliumNext Affected before 0.97.0 Fixed in 0.97.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:triliumnotes:trilium:*:*:*:*:*:*:*:*——TriliumNext
  • cpe:2.3:a:triliumnotes:trilium:*:*:*:*:*:*:*:* Versions — — ·TriliumNext

Remediation

  • Fix · CNA Trilium (TriliumNext) Fixed in 0.97.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-53544

References

Other 3

  • TI-2026-28300 Trilium Notes: Authentication Bypass in Clipper API for Electron (Desktop) Builds CVSS 3.1HIGH 8.6
  • TI-2026-36250 Trilium: Malicious import with GeoMap marker title XSS leads to RCE on the desktop client CVSS 4.0CRITICAL 9.3
  • TI-2026-33410 Trilium Notes : Note Import to RCE via #docName Path Traversal (Safe Import Enabled) CVSS 4.0CRITICAL 9.3
  • TI-2026-38639 Trilium: Note Import to RCE via Mind Elixir dangerouslySetInnerHtml CVSS 4.0CRITICAL 9.3
  • TI-2026-54012 Trilium unauthenticated share-search discloses password-protected and hidden shared notes CVSS 3.1HIGH 7.5
  • TI-2026-35228 Code injection in TriliumNext Trilium CVSS 4.0HIGH 8.6
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences