CVE-2025-53544Public exploitNetwork attack vector

Password guessing via unthrottled sync-seed authentication

Published Aug 5, 2025 · Updated Aug 5, 2025

Improper rate limiting in Trilium Notes before 0.97.0 allows remote attackers to guess the login password through the sync-seed endpoint. The GET /api/setup/sync-seed route invokes auth.checkCredentials without loginRateLimiter, while protected login paths apply that limiter. No account or user interaction is required; a correct guess exposes documentSecret and authenticated features, including server-side script execution.

CVSS severity7.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper rate limiting in Trilium Notes before 0.97.0 allows remote attackers to guess the login password through the sync-seed endpoint. The GET /api/setup/sync-seed route invokes auth.checkCredentials without loginRateLimiter, while protected login paths apply that limiter. No account or user interaction is required; a correct guess exposes documentSecret and authenticated features, including server-side script execution.

The record

CVE
CVE-2025-53544
Published
Aug 5, 2025
Updated
Aug 5, 2025
Vendor
Trilium Next
Product
Trilium Notes
Classifications
CWE-307, T1110.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.97.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Trilium Next · Trilium Notesversion=< 0.97.0

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
T1110.001Password Guessing

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo