{"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": "2026-10-12T20:01:09.451Z"}, "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"}}}}

{}

{"affected": [{"affectedData": [{"product": "coraza", "vendor": "corazawaf", "versions": [{"status": "affected", "version": ">= 3.4.0, < 3.8.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-41508", "lastModified": "2026-10-12T21:17:17.240", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-12T21:17:17.240", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/corazawaf/coraza/commit/f94c81bec209f658120c418448d0590a549b71df"}, {"source": "security-advisories@github.com", "url": "https://github.com/corazawaf/coraza/releases/tag/v3.8.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/corazawaf/coraza/security/advisories/GHSA-r3rm-qphw-hh76"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-693"}, {"lang": "en", "value": "CWE-755"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-10-12T21:30:18.565742+00:00", "updated": "2026-10-12T21:30:18.565748+00:00", "vendors": []}