{"id":"CVE-2026-105854","state":"PUBLISHED","title":"Payload: ReDoS in Multipart Content-Type Validation","description":"Payload is a free and open source headless content management system. In versions from 3.0.0 before 3.90.0 and canary versions before 4.0.0-canary.34, a malformed multipart request body can cause multipart Content-Type processing to take an extremely long time, resulting in uncontrolled resource consumption. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.","publishedAt":"2026-10-06T16:17:30.893Z","updatedAt":"2026-10-06T17:30:01.567Z","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":"GitHub_M"},"assigner":"GitHub_M","products":["payloadcms payload"],"affected":[{"vendor":"payloadcms","product":"payload","versions":[{"version":">= 3.0.0, < 3.90.0","status":"affected"},{"version":">= 4.0.0-canary.0, < 4.0.0-canary.34","status":"affected"}]}],"references":["https://github.com/payloadcms/payload/security/advisories/GHSA-2g7p-5934-q4w7","https://github.com/payloadcms/payload/commit/0084bd51fb7742b26a88431bb84cb1696857e6dc","https://github.com/payloadcms/payload/releases/tag/v3.90.0"],"weaknesses":["CWE-400","CWE-1333"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/105xxx/CVE-2026-105854.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-105854","state":"PUBLISHED","datePublished":"2026-10-06T16:17:30.893Z","dateUpdated":"2026-10-06T17:30:01.567Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-05T23:06:29.748Z"},"containers":{"cna":{"title":"Payload: ReDoS in Multipart Content-Type Validation","descriptions":[{"lang":"en","value":"Payload is a free and open source headless content management system. In versions from 3.0.0 before 3.90.0 and canary versions before 4.0.0-canary.34, a malformed multipart request body can cause multipart Content-Type processing to take an extremely long time, resulting in uncontrolled resource consumption. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34."}],"affected":[{"vendor":"payloadcms","product":"payload","versions":[{"version":">= 3.0.0, < 3.90.0","status":"affected"},{"version":">= 4.0.0-canary.0, < 4.0.0-canary.34","status":"affected"}]}],"references":[{"url":"https://github.com/payloadcms/payload/security/advisories/GHSA-2g7p-5934-q4w7","name":"https://github.com/payloadcms/payload/security/advisories/GHSA-2g7p-5934-q4w7","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/payloadcms/payload/commit/0084bd51fb7742b26a88431bb84cb1696857e6dc","name":"https://github.com/payloadcms/payload/commit/0084bd51fb7742b26a88431bb84cb1696857e6dc","tags":["x_refsource_MISC"]},{"url":"https://github.com/payloadcms/payload/releases/tag/v3.90.0","name":"https://github.com/payloadcms/payload/releases/tag/v3.90.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-1333","lang":"en","description":"CWE-1333: Inefficient Regular Expression Complexity","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-06T16:17:30.893Z"},"source":{"advisory":"GHSA-2g7p-5934-q4w7","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-06T17:29:52.942510Z","id":"CVE-2026-105854","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":"2026-10-06T17:30:01.567Z"}}]}}}