CryptPad unbounded WebSocket frame flood_CVE-2025-51846

7.5 / 10

HIGH

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

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.

Basic Information

ID CVE-2025-51846

Source cisa-cg

Published Apr 30, 2026 at 16:35

Modified Apr 30, 2026 at 17:15

Affected Product

Vendor CryptPad

Product CryptPad

Version 2025.3.1

Affected Versions CryptPad CryptPad 2025.3.1

CWE Classification

CWE-770

References

{
    "lastseen": "",
    "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": "2026-04-30T16:35:59.625Z",
    "modified": "2026-04-30T17:15:30.109Z",
    "type": "cve",
    "title": "CryptPad unbounded WebSocket frame flood",
    "source": "cisa-cg",
    "references": "https://github.com/cryptpad/cryptpad/pull/2239/changes/1e0c06ad8a0c5dab795f85f9730ec2693320c62e\nhttps://www.cve.org/CVERecord?id=CVE-2025-51846\nhttps://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-119-01.json\nhttps://github.com/JohnPerifanis/cryptpad-cve-2025-51846-advisory/blob/main/README.md",
    "id": "CVE-2025-51846",
    "bulletinFamily": "",
    "cwe": [
        "CWE-770"
    ],
    "cvelist": null,
    "sourceData": "CryptPad CryptPad 2025.3.1",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "CryptPad",
    "version": "2025.3.1",
    "vendor": "CryptPad",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}