CVE-2025-59788

04.12.2025, 19:16

Cross-site scripting (XSS) vulnerability in a reachable files_pdfviewer example directory in Nextcloud with versions before 22.2.10.33, 23.0.12.29, 24.0.12.28, 25.0.13.23, 26.0.13.20, 27.1.11.20, 28.0.14.11, 29.0.16.8, 30.0.17, 31.0.10, and 32.0.1 allows attackers to execute arbitrary JavaScript in the context of a user's browser via a crafted PDF file to viewer.html. This issue is related to CVE-2024-4367, but the root cause of this Nextcloud issue is that the product exposes executable example code on a same-origin basis.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	6.4 MEDIUM	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
mitre	CNA	6.4 MEDIUM				CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Awaiting analysis

This vulnerability is currently awaiting analysis.

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Common Weakness Enumeration

CWE-749 - Exposed Dangerous Method or Function
The software provides an Applications Programming Interface (API) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted.

Vulnerability Media Exposure

[GERMAN] Nextcloud: Schwachstelle ermöglicht Cross-Site Scripting
Ein Angreifer kann eine Schwachstelle in Nextcloud ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen.
Published: 2025-12-03T23:00:00+00:00

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-24wp-p865-7j4r

https://nextcloud.com

https://www.redteam-pentesting.de/en/advisories/rt-sa-2025-003/