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.
Published: 2026-04-30
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 04 May 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Xwiki
Xwiki cryptpad
CPEs cpe:2.3:a:xwiki:cryptpad:*:*:*:*:*:*:*:*
Vendors & Products Xwiki
Xwiki cryptpad

Fri, 01 May 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Cryptpad
Cryptpad cryptpad
Vendors & Products Cryptpad
Cryptpad cryptpad

Thu, 30 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 30 Apr 2026 16:45:00 +0000

Type Values Removed Values Added
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.
Title CryptPad unbounded WebSocket frame flood
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: cisa-cg

Published:

Updated: 2026-04-30T17:15:30.109Z

Reserved: 2025-06-16T03:28:36.966Z

Link: CVE-2025-51846

cve-icon Vulnrichment

Updated: 2026-04-30T17:15:26.160Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-30T17:16:25.467

Modified: 2026-05-04T16:52:11.783

Link: CVE-2025-51846

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-01T08:21:13Z

Weaknesses