CVE-2025-51846 HIGH

CVE-2025-51846: CryptPad unbounded WebSocket frame flood

Vendor Cryptpad
Product CryptPad
Weakness CWE-770 · Uncontrolled resource consumption
Published April 30, 2026
Last update April 30, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 30, 2026 CVE published
April 30, 2026 Record updated