{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41508","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-20T18:18:50.681Z","datePublished":"2026-10-12T20:01:09.451Z","dateUpdated":"2026-10-13T20:24:17.217Z"},"containers":{"cna":{"title":"OWASP Coraza WAF: Truncated multipart body bypasses MULTIPART_STRICT_ERROR (rule 200003) via silent io.ErrUnexpectedEOF handling","problemTypes":[{"descriptions":[{"cweId":"CWE-693","lang":"en","description":"CWE-693: Protection Mechanism Failure","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-755","lang":"en","description":"CWE-755: Improper Handling of Exceptional Conditions","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.8,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/corazawaf/coraza/security/advisories/GHSA-r3rm-qphw-hh76","tags":["x_refsource_CONFIRM"],"url":"https://github.com/corazawaf/coraza/security/advisories/GHSA-r3rm-qphw-hh76"},{"name":"https://github.com/corazawaf/coraza/commit/f94c81bec209f658120c418448d0590a549b71df","tags":["x_refsource_MISC"],"url":"https://github.com/corazawaf/coraza/commit/f94c81bec209f658120c418448d0590a549b71df"},{"name":"https://github.com/corazawaf/coraza/releases/tag/v3.8.0","tags":["x_refsource_MISC"],"url":"https://github.com/corazawaf/coraza/releases/tag/v3.8.0"}],"affected":[{"vendor":"corazawaf","product":"coraza","versions":[{"version":">= 3.4.0, < 3.8.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-12T20:01:09.451Z"},"descriptions":[{"lang":"en","value":"OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.4.0 until 3.8.0, the multipart processor in internal/bodyprocessors/multipart.go treats io.ErrUnexpectedEOF as nonfatal without setting MULTIPART_STRICT_ERROR. A remote attacker can submit a truncated multipart body that produces io.ErrUnexpectedEOF, causing parsing to stop without raising the strict-error signal used by the recommended defensive rule. Rules 200002 and 200003 do not fire, allowing multipart parser-disagreement payloads to reach a backend that interprets the truncated body differently. This issue is fixed in version 3.8.0."}],"source":{"advisory":"GHSA-r3rm-qphw-hh76","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-13T20:19:07.186164Z","id":"CVE-2026-41508","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-13T20:24:17.217Z"}}]}}