Description
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.
CVSS Metrics
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Attack Vector
- network
- Complexity
- low
- Privileges
- low
- User Action
- none
- Scope
- changed
- Confidentiality
- low
- Integrity
- low
- Availability
- none
- Weaknesses
- CWE-749CWE-79
Metadata
- Primary Vendor
- NEXTCLOUD
- Published
- 12/4/2025
- Last Modified
- 3/25/2026
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
nextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_servernextcloud : nextcloud_server
AI-Powered Remediation
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