{"id":"CVE-2025-51846","state":"PUBLISHED","title":"CryptPad unbounded WebSocket frame flood","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.","publishedAt":"2026-04-30T16:35:59.625Z","updatedAt":"2026-04-30T17:15:30.109Z","severity":{"score":8.7,"label":"High","version":"4.0","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","source":"cisa-cg"},"assigner":"cisa-cg","products":["CryptPad CryptPad"],"affected":[{"vendor":"CryptPad","product":"CryptPad","defaultStatus":"affected","versions":[{"version":"2025.3.1","status":"affected","lessThan":"2026.2.2","versionType":"custom"},{"version":"2026.2.2","status":"unaffected"}]}],"references":["https://github.com/cryptpad/cryptpad/pull/2239/changes/1e0c06ad8a0c5dab795f85f9730ec2693320c62e","https://www.cve.org/CVERecord?id=CVE-2025-51846","https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-119-01.json","https://github.com/JohnPerifanis/cryptpad-cve-2025-51846-advisory/blob/main/README.md"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:09:31.862Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/51xxx/CVE-2025-51846.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-51846","state":"PUBLISHED","datePublished":"2026-04-30T16:35:59.625Z","dateUpdated":"2026-04-30T17:15:30.109Z","assignerShortName":"cisa-cg","assignerOrgId":"9119a7d8-5eab-497f-8521-727c672e3725","dateReserved":"2025-06-16T03:28:36.966Z"},"containers":{"cna":{"title":"CryptPad unbounded WebSocket frame flood","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"CryptPad","product":"CryptPad","defaultStatus":"affected","versions":[{"version":"2025.3.1","status":"affected","lessThan":"2026.2.2","versionType":"custom"},{"version":"2026.2.2","status":"unaffected"}]}],"references":[{"url":"https://github.com/cryptpad/cryptpad/pull/2239/changes/1e0c06ad8a0c5dab795f85f9730ec2693320c62e","name":"url"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-51846","name":"url"},{"url":"https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-119-01.json","name":"url"},{"url":"https://github.com/JohnPerifanis/cryptpad-cve-2025-51846-advisory/blob/main/README.md","name":"url"}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"cvssV4_0":{"version":"4.0","baseScore":8.7,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"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","userInteraction":"NONE","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","subIntegrityImpact":"NONE","vulnIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnConfidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-04-22T15:32:32.020942Z","id":"CVE-2025-51846","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","description":"CWE-770 Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"cisa-cg","orgId":"9119a7d8-5eab-497f-8521-727c672e3725","dateUpdated":"2026-04-30T16:35:59.625Z"},"credits":[{"value":"John Perifanis, Unisystems","lang":"en"}],"datePublic":"2026-03-25T00:00:00.000Z"},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-30T17:15:22.933048Z","id":"CVE-2025-51846","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-30T17:15:30.109Z"}}]}}}