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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/JohnPerifanis/cryptpad-cve-2025-51846-advisory/blob/main/README.md	Exploit Third Party Advisory
https://github.com/cryptpad/cryptpad/pull/2239/changes/1e0c06ad8a0c5dab795f85f9730ec2693320c62e	Patch
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-119-01.json	Third Party Advisory
https://www.cve.org/CVERecord?id=CVE-2025-51846	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:xwiki:cryptpad:*:*:*:*:*:*:*:*

History

04 May 2026, 16:52

Type	Values Removed	Values Added
CPE		cpe:2.3:a:xwiki:cryptpad::::::::
First Time		Xwiki cryptpad Xwiki
References	~~() https://github.com/JohnPerifanis/cryptpad-cve-2025-51846-advisory/blob/main/README.md -~~	() https://github.com/JohnPerifanis/cryptpad-cve-2025-51846-advisory/blob/main/README.md - Exploit, Third Party Advisory
References	~~() https://github.com/cryptpad/cryptpad/pull/2239/changes/1e0c06ad8a0c5dab795f85f9730ec2693320c62e -~~	() https://github.com/cryptpad/cryptpad/pull/2239/changes/1e0c06ad8a0c5dab795f85f9730ec2693320c62e - Patch
References	~~() https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-119-01.json -~~	() https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-119-01.json - Third Party Advisory
References	~~() https://www.cve.org/CVERecord?id=CVE-2025-51846 -~~	() https://www.cve.org/CVERecord?id=CVE-2025-51846 - Third Party Advisory

30 Apr 2026, 17:20

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-30 17:16

Updated : 2026-06-17 09:35

NVD link : CVE-2025-51846

Mitre link : CVE-2025-51846

CVE.ORG link : CVE-2025-51846

JSON object : View

Products Affected

xwiki

cryptpad

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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