PT-2026-55939 · Owncloud · Sharepoint For Owncloud+1

Published 2026-07-06 · Updated 2026-07-06 · CVE-2025-53828

Positive Technologies (AI Summary)

CVSS v3.1

8.5

High

Base vector

AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions SharePoint for ownCloud versions prior to 0.4.1 ownCloud 10 versions prior to 10.15.3

Description An attacker with administrative privileges can exploit a Server-Side Request Forgery (SSRF) in the SharePoint app to execute arbitrary code on the system. SSRF is a flaw that allows an attacker to induce the server-side application to make requests to an unintended location.

Recommendations Upgrade SharePoint for ownCloud to version 0.4.1. Upgrade ownCloud 10 to version 10.15.3 or later.

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2025-53828

Affected Products

Sharepoint For Owncloud

Owncloud 10

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2025-53828 · Security Note
• https://github.com/owncloud/security-advisories/security/advisories/GHSA-4m66-rpfj-m5f6 · Note
• https://twitter.com/CVEnew/status/2074180688274993555 · Twitter Post
• https://twitter.com/infoflowcloud/status/2074181958058316119 · Twitter Post