CVE-2025-62425

HIGH EPSS 34.2%
Published Oct 16, 20258mo ago · Modified Jun 17, 20261w ago
8.3 CVSS 3.1
High
Find Similar
Published Oct 16, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago

Description

MAS (Matrix Authentication Service) is a user management and authentication service for Matrix homeservers, written and maintained by Element. A logic flaw in matrix-authentication-service 0.20.0 through 1.4.0 allows an attacker with access to an authenticated MAS session to perform sensitive operations without entering the current password. These include changing the current password, adding or removing an e-mail address and deactivating the account. The vulnerability only affects instances which have the local password database feature enabled (passwords section in the config). Patched in matrix-authentication-service 1.4.1.

CVSS Details

Base Score
8.3
Exploitability
2.8
Impact
5.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
34.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-620

References 2

  • github.com https://github.com/element-hq/matrix-authentication-service/commit/bce99edb6177be11f8f38c1d01f5606ce7b4b2e5
  • github.com https://github.com/element-hq/matrix-authentication-service/security/advisories/GHSA-6wfp-jq3r-j9xh

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.