EUVD-2026-18657
GHSA-gwpq-c4hc-7qhj
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Lifecycle Timeline
3DescriptionCVE.org
An issue in Dokuwiki v.2025-05-14b 'Librarian' allows a remote attacker to cause a denial of service via the media_upload_xhr() function in the media.php file
AnalysisAI
Denial of service in Dokuwiki version 2025-05-14b 'Librarian' release allows remote attackers to crash or disable the application through improper input handling in the media_upload_xhr() function within media.php. The vulnerability requires network access to the media upload endpoint but does not require authentication. No public exploit code, CVSS scoring, or active exploitation has been confirmed at the time of analysis.
Technical ContextAI
Dokuwiki is a PHP-based wiki engine commonly used for documentation and knowledge management. The vulnerability exists in the media upload functionality, specifically the media_upload_xhr() function in media.php, which handles AJAX-based file uploads. The issue appears to stem from insufficient input validation or resource constraints during file upload processing, allowing remote attackers to cause the service to become unavailable or unresponsive. Without a published CWE, the root cause likely involves improper exception handling, resource exhaustion, or unvalidated file upload parameters that crash the PHP application.
RemediationAI
Upgrade Dokuwiki to a version released after 2025-05-14b 'Librarian', as patch status and exact fix version information are not provided in available sources. Administrators should check the official Dokuwiki release notes and update history to identify the first patched version following this release. As an interim mitigation, restrict access to the media upload endpoint (/media_upload_xhr) to authenticated users only via web server configuration or firewall rules, or disable AJAX media uploads temporarily if the service is non-critical. Refer to the GitHub issue (https://github.com/Hebing123/cve/issues/94) for community discussion and potential workarounds until an official patch is released.
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Same weakness CWE-400 – Uncontrolled Resource Consumption
View allSame technique Denial Of Service
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External POC / Exploit Code
Leaving vuln.today