CVE-2025-51846CWE-770denial-of-service

CVE-2025-51846

High · published April 30, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
46.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00578 · 46.9th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-04-30T21:16Z
Affected products (1)
ProductVersionsFixed in
xwiki/cryptpad≥ 2025.3.1, < 2026.2.22026.2.2
References (4)
https://github.com/JohnPerifanis/cryptpad-cve-2025-51846-advisory/blob/main/README.md · 9119a7d8-5eab-497f-8521-727c672e3725https://github.com/cryptpad/cryptpad/pull/2239/changes/1e0c06ad8a0c5dab795f85f9730ec2693320c62e · 9119a7d8-5eab-497f-8521-727c672e3725https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-119-01.json · 9119a7d8-5eab-497f-8521-727c672e3725https://www.cve.org/CVERecord?id=CVE-2025-51846 · 9119a7d8-5eab-497f-8521-727c672e3725
EPSS history
Timeline
  • 30 APR 16:35Z
    CryptPad unbounded WebSocket frame flood
    cvelistv5