Is CVE-2025-53830 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-53830 being exploited in the wild.

How severe is CVE-2025-53830?

Critical severity, with a CVSS score of 9.1, published 6 July 2026.

Which products and versions are affected?

ownCloud Anti-Virus < 1.2.3; Owncloud < 1.2.3.

Is there a fix for CVE-2025-53830?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2025-53830 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2025-53830?

Check whether you run ownCloud Anti-Virus or Owncloud at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2025-53830: ownCloud Anti-Virus SSRF leading to code execution

Q: Which products and versions are affected?

ownCloud Anti-Virus < 1.2.3; Owncloud < 1.2.3.

Q: Is there a fix for CVE-2025-53830?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

Q: How is CVE-2025-53830 attacked?

It is attacked over the network, in a network appliance.

Q: Am I affected by CVE-2025-53830?

Check whether you run ownCloud Anti-Virus or Owncloud at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2025-53830 · Severity: critical · CVSS 9.1 · Published 2026-07-06

The Anti-Virus application for ownCloud, which scans files for malware within the storage platform, contains a security flaw that could allow an administrative user to force the server to make unauthorized requests. If exploited, this could allow an attacker to execute malicious code on the server, potentially leading to a full system takeover or access to sensitive internal data. Organizations using ownCloud 10 should update their software or the specific anti-virus plugin to the latest versions to prevent this risk.

Technologies: Owncloud. Vendors: ownCloud.

Quick answers

Is CVE-2025-53830 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-53830 being exploited in the wild.
How severe is CVE-2025-53830?: Critical severity, with a CVSS score of 9.1, published 6 July 2026.
Which products and versions are affected?: ownCloud Anti-Virus < 1.2.3; Owncloud < 1.2.3.
Is there a fix for CVE-2025-53830?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-53830 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-53830?: Check whether you run ownCloud Anti-Virus or Owncloud at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Server-Side Request Forgery (SSRF) vulnerability (CWE-918) exists in the Anti-Virus for ownCloud application before version 1.2.3. The vulnerability allows an attacker with administrative privileges to manipulate the server into making unintended requests to internal or external resources. According to the advisory, this SSRF can be leveraged to achieve arbitrary code execution. The issue affects ownCloud 10 environments running versions prior to 10.15.3. A fix is available in Anti-Virus for ownCloud version 1.2.3 and ownCloud 10 version 10.15.3.

Affected products

ownCloud Anti-Virus for ownCloud 10 < 1.2.3
ownCloud ownCloud 10 < 10.15.3

Timeline

2026-06-24: advisory: Initial advisory published by ownCloud
2026-07-06: disclosed: CVE published in NVD dataset

References

https://github.com/owncloud/security-advisories/security/advisories/GHSA-3wg4-mg27-hj4w

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.