CVE-2026-107834
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.
How to fix
- github.com/corazawaf/coraza/v33.8.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/corazawaf/coraza/v3Go | 3.0.0 ≤ v < 3.8.0 | 3.8.0 |
| github.com/corazawaf/corazaGo | No range specified | — |
| github.com/corazawaf/coraza/v2Go | No range specified | — |
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