CVE-2025-46347: Yeswiki

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

YesWiki is a wiki system written in PHP. Prior to version 4.5.4, YesWiki vulnerable to remote code execution. An arbitrary file write can be used to write a file with a PHP extension, which then can be browsed to in order to execute arbitrary code on the server, resulting in a full compromise of the server. This could potentially be performed unwittingly by a user. This issue has been patched in version 4.5.4.

Affected products

• Yeswiki Yeswiki: before 4.5.4 (fixed in 4.5.4)

Published 2025-04-29. Last modified 2026-06-17.