{"id":"CVE-2026-41508","revision":"bf5cf1b1d4ef464798de22a68685ec38","records":[{"revision":"bf5cf1b1d4ef464798de22a68685ec38","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-41508","aliases":[],"title":"OWASP Coraza WAF: Truncated multipart body bypasses MULTIPART_STRICT_ERROR (rule 200003) via silent io.ErrUnexpectedEOF handling","description":"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.","state":0,"publishedAt":"2026-10-12T20:01:09.451+00:00","modifiedAt":"2026-10-13T20:24:17.217+00:00","affected":[{"ecosystem":"Vendor product","name":"coraza","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"corazawaf\",\n                    \"product\": \"coraza\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 3.4.0, < 3.8.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","score":5.8,"severity":"MEDIUM"}],"references":["https://github.com/corazawaf/coraza/security/advisories/GHSA-r3rm-qphw-hh76","https://github.com/corazawaf/coraza/commit/f94c81bec209f658120c418448d0590a549b71df","https://github.com/corazawaf/coraza/releases/tag/v3.8.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-41508","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-41508","identifiers":["CVE-2026-41508"]},"retained":false,"historicalAffected":[]}],"coverage":[]}