Vulnerability Details CVE-2025-51846
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 24.0%
CVSS Severity
CVSS v3 Score 7.5
References
- https://github.com/JohnPerifanis/cryptpad-cve-2025-51846-advisory/blob/main/README.md
- https://github.com/cryptpad/cryptpad/pull/2239/changes/1e0c06ad8a0c5dab795f85f9730ec2693320c62e
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-119-01.json
- https://www.cve.org/CVERecord?id=CVE-2025-51846