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.
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Thu, 16 Oct 2025 20:15:00 +0000
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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. | |
Title | Matrix Authentication Service account password can be changed using an authenticated session without supplying the current password | |
Weaknesses | CWE-620 | |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-10-16T19:34:11.777Z
Reserved: 2025-10-13T16:26:12.180Z
Link: CVE-2025-62425

Updated: 2025-10-16T19:34:07.799Z

Status : Received
Published: 2025-10-16T19:15:35.120
Modified: 2025-10-16T19:15:35.120
Link: CVE-2025-62425

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