What is CVE-2025-53830?

CVE-2025-53830 is a critical-severity vulnerability in ownCloud Anti-Virus For, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.1/10. Published 2026-07-06.

How severe is CVE-2025-53830?

Critical severity. CVSS v3 base score is 9.1 out of 10.

SSRF in ownCloud Anti-Virus For

CVE-2025-53830

Anti-Virus for ownCloud is an anti-virus application for file storage, synchronization, and sharing application ownCloud. Versions of Anti-Virus for ownCloud before 1.2.3 are vulnerable to Server-Side Request Forgery (SSRF). This corresponds to versions of ownCloud 10 prior to 10.15.3. Upgrade ownCloud 10 to version 10.15.3 or later or upgrade Anti-Virus for ownCloud 10 to version 1.2.3 or later to receive a fix.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.003 (17.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Owncloud Anti-virus For — versions < 1.2.3
Owncloud 10 — versions < 10.15.3

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2025-53830?: CVE-2025-53830 is a critical-severity vulnerability in ownCloud Anti-Virus For, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.1/10. Published 2026-07-06.
How severe is CVE-2025-53830?: Critical severity. CVSS v3 base score is 9.1 out of 10.