{"id":"CVE-2026-107834","state":"PUBLISHED","title":"OWASP Coraza WAF: Resource exhaustion via deferred file handle accumulation in multipart body processor","description":"OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.0, the multipart loop in internal/bodyprocessors/multipart.go executes defer temp.Close() for every uploaded file part, so each temporary-file descriptor remains open until the complete request returns. An unauthenticated attacker can submit a multipart body containing many minimal file parts and exhaust the process file-descriptor table within the request-body size limit, causing os.CreateTemp failures, MULTIPART_STRICT_ERROR responses, blocked legitimate uploads, and process-wide inability to open files or sockets. This issue is fixed in version 3.8.0.","publishedAt":"2026-10-09T17:41:07.802Z","updatedAt":"2026-10-13T20:26:52.261Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["corazawaf coraza"],"affected":[{"vendor":"corazawaf","product":"coraza","versions":[{"version":">= 3.0.0, < 3.8.0","status":"affected"}]}],"references":["https://github.com/corazawaf/coraza/security/advisories/GHSA-rp9v-7xv3-r6g3","https://github.com/corazawaf/coraza/commit/1bc39036e99c88e7de60cf8e6bb55ee4c311223c","https://github.com/corazawaf/coraza/releases/tag/v3.8.0"],"weaknesses":["CWE-400","CWE-772"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/107xxx/CVE-2026-107834.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-107834","state":"PUBLISHED","datePublished":"2026-10-09T17:41:07.802Z","dateUpdated":"2026-10-13T20:26:52.261Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-08T22:34:49.289Z"},"containers":{"cna":{"title":"OWASP Coraza WAF: Resource exhaustion via deferred file handle accumulation in multipart body processor","descriptions":[{"lang":"en","value":"OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.0, the multipart loop in internal/bodyprocessors/multipart.go executes defer temp.Close() for every uploaded file part, so each temporary-file descriptor remains open until the complete request returns. An unauthenticated attacker can submit a multipart body containing many minimal file parts and exhaust the process file-descriptor table within the request-body size limit, causing os.CreateTemp failures, MULTIPART_STRICT_ERROR responses, blocked legitimate uploads, and process-wide inability to open files or sockets. This issue is fixed in version 3.8.0."}],"affected":[{"vendor":"corazawaf","product":"coraza","versions":[{"version":">= 3.0.0, < 3.8.0","status":"affected"}]}],"references":[{"url":"https://github.com/corazawaf/coraza/security/advisories/GHSA-rp9v-7xv3-r6g3","name":"https://github.com/corazawaf/coraza/security/advisories/GHSA-rp9v-7xv3-r6g3","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/corazawaf/coraza/commit/1bc39036e99c88e7de60cf8e6bb55ee4c311223c","name":"https://github.com/corazawaf/coraza/commit/1bc39036e99c88e7de60cf8e6bb55ee4c311223c","tags":["x_refsource_MISC"]},{"url":"https://github.com/corazawaf/coraza/releases/tag/v3.8.0","name":"https://github.com/corazawaf/coraza/releases/tag/v3.8.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-772","lang":"en","description":"CWE-772: Missing Release of Resource after Effective Lifetime","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-09T17:41:07.802Z"},"source":{"advisory":"GHSA-rp9v-7xv3-r6g3","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-13T20:19:11.994433Z","id":"CVE-2026-107834","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":"2026-10-13T20:26:52.261Z"}}]}}}