{"api_version":"1","generated_at":"2026-10-09T21:33:01+00:00","cve":"CVE-2026-107834","urls":{"html":"https://cve.report/CVE-2026-107834","api":"https://cve.report/api/cve/CVE-2026-107834.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-107834","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-107834"},"summary":{"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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-10-09 18:17:05","updated_at":"2026-10-09 18:17:05"},"problem_types":["CWE-400","CWE-772","CWE-400 CWE-400: Uncontrolled Resource Consumption","CWE-772 CWE-772: Missing Release of Resource after Effective Lifetime"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"5.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"5.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","data":{"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"}}],"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","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/corazawaf/coraza/releases/tag/v3.8.0","name":"https://github.com/corazawaf/coraza/releases/tag/v3.8.0","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/corazawaf/coraza/commit/1bc39036e99c88e7de60cf8e6bb55ee4c311223c","name":"https://github.com/corazawaf/coraza/commit/1bc39036e99c88e7de60cf8e6bb55ee4c311223c","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-107834","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107834","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"corazawaf","product":"coraza","version":"affected >= 3.0.0, < 3.8.0","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"coraza","vendor":"corazawaf","versions":[{"status":"affected","version":">= 3.0.0, < 3.8.0"}]}],"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."}],"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","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-772","description":"CWE-772: Missing Release of Resource after Effective Lifetime","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-09T17:41:07.802Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/corazawaf/coraza/security/advisories/GHSA-rp9v-7xv3-r6g3","tags":["x_refsource_CONFIRM"],"url":"https://github.com/corazawaf/coraza/security/advisories/GHSA-rp9v-7xv3-r6g3"},{"name":"https://github.com/corazawaf/coraza/commit/1bc39036e99c88e7de60cf8e6bb55ee4c311223c","tags":["x_refsource_MISC"],"url":"https://github.com/corazawaf/coraza/commit/1bc39036e99c88e7de60cf8e6bb55ee4c311223c"},{"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"}],"source":{"advisory":"GHSA-rp9v-7xv3-r6g3","discovery":"UNKNOWN"},"title":"OWASP Coraza WAF: Resource exhaustion via deferred file handle accumulation in multipart body processor"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-107834","datePublished":"2026-10-09T17:41:07.802Z","dateReserved":"2026-10-08T22:34:49.289Z","dateUpdated":"2026-10-09T17:41:07.802Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-09 18:17:05","lastModifiedDate":"2026-10-09 18:17:05","problem_types":["CWE-400","CWE-772","CWE-400 CWE-400: Uncontrolled Resource Consumption","CWE-772 CWE-772: Missing Release of Resource after Effective Lifetime"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":1.4}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"107834","Ordinal":"1","Title":"OWASP Coraza WAF: Resource exhaustion via deferred file handle a","CVE":"CVE-2026-107834","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"107834","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"OWASP Coraza WAF: Resource exhaustion via deferred file handle a"}]}}}