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CVE-2025-62425

Matrix Authentication Service account password can be changed using an authenticated session without supplying the current password

Published: Oct 16, 2025Updated: Oct 21, 2025 Sources: CVE List NVDCWE-620
NVD MITRE
8.3CVSSHIGH
EPSS Score
0.4%
Top 66.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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 Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-620

Affected Products

matrix-authentication-serviceelement-hq
Mixed
Communications / messaging-chat
element-hqoss-projectCommunications

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

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

Timeline

Published
Oct 16, 2025
Last Updated
Oct 21, 2025

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