CVE-2025-53544 HIGH

CVE-2025-53544: Trilium Notes is Vulnerable to Brute-force Protection Bypass via Initial Sync Seed Retrieval

Vendor Triliumnext
Product Trilium
Weakness CWE-307 · Brute force
Published August 5, 2025
Last update August 5, 2025

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 5, 2025 CVE published
August 5, 2025 Record updated