What is CVE-2025-62425?

CVE-2025-62425 is a high-severity vulnerability in Element-hq Matrix-authentication-service, classified under CWE-620. CVSS score: 8.3/10. Published 2025-10-16.

How severe is CVE-2025-62425?

High severity. CVSS v3 base score is 8.3 out of 10.

Vulnerability in Element-hq Matrix-authentication-service

CVE-2025-62425

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 acces…

EPSS: 0.004 (34.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H.

Affected products

Element-hq Matrix-authentication-service — versions >= 0.20.0, <= 1.4.0

Weakness classification (CWE)

CWE-620

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-62425?: CVE-2025-62425 is a high-severity vulnerability in Element-hq Matrix-authentication-service, classified under CWE-620. CVSS score: 8.3/10. Published 2025-10-16.
How severe is CVE-2025-62425?: High severity. CVSS v3 base score is 8.3 out of 10.