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CVE-2025-59788

5.4 medium SSVC exploitation: poc Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.4 · nextcloudNVD modified 2026-10-18 15:10

Affected (CPE criteria) 2

  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*

References 3