Disclosure summary
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.
Source-reported weakness categories
CWE-400, CWE-772
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2026-107834
Open original source · Updated Oct 09, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
GitHub Reviewed Security Advisories · GHSA-rp9v-7xv3-r6g3
Open original source · Updated Oct 09, 2026
Coraza: Resource exhaustion via deferred file handle accumulation in multipart body processor
Source severity: MEDIUM / 0
| Ecosystem | Package | Affected range | First patched |
|---|---|---|---|
| go | github.com/corazawaf/coraza/v3 | >= 3.0.0, < 3.8.0 | 3.8.0 |
Original records & references
PUBLISHED 2026-10-09T14:17:05-04:00
MODIFIED 2026-10-09T14:17:05-04:00
INGESTED 2026-10-10T20:55:12-04:00