CVE-2025-51846— CryptPad unbounded WebSocket frame flood
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I. Basic Information for CVE-2025-51846
Vulnerability Information
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Vulnerability Title
CryptPad unbounded WebSocket frame flood
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
Vulnerability Title
CryptPad 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CryptPad是CryptPad开源的一个协作办公套件。 CryptPad 2025.3.1版本存在安全漏洞，该漏洞源于无限制的WebSocket帧洪泛，可能导致远程未认证攻击者显著降低或拒绝所有用户的服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-51846
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IV. Related Vulnerabilities
Same weakness: CWE-770
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Atom table exhaustion via attacker-controlled GraphQL SDL na - CVE-2026-44499
ZEBRA: Permanent Block Discovery Halt via Gossip Queue Satur - CVE-2026-44500
ZEBRA: Allocation Amplification in Inbound Network Deseriali
V. Comments for CVE-2025-51846
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