CVE-2025-51846: XWiki Cryptpad

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

CryptPad 2025.3.1 allows unbounded WebSocket frame flood. A remote, unauthenticated attacker can significantly degrade or deny service for all users of a CryptPad instance. Fixed in 2026.2.2.

Affected products

• XWiki Cryptpad: from 2025.3.1, before 2026.2.2 (fixed in 2026.2.2)

Published 2026-04-30. Last modified 2026-06-17.