Description
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.
Exploits (1)
github
WRITEUP
by JohnPerifanis · poc
https://github.com/JohnPerifanis/cryptpad-cve-2025-51846-advisory
References (4)
Scores
CVSS v3
7.5
EPSS
0.0008
EPSS Percentile
24.1%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (2)
CryptPad/CryptPad
2025.3.1 - 2026.2.2
CryptPad/CryptPad
2026.2.2
Published
Apr 30, 2026
Tracked Since
Apr 30, 2026