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.
History

Tue, 13 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 11 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Coraza
Coraza coraza
Vendors & Products Coraza
Coraza coraza

Fri, 09 Oct 2026 17:45:00 +0000

Type Values Removed Values Added
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.
Title OWASP Coraza WAF: Resource exhaustion via deferred file handle accumulation in multipart body processor
Weaknesses CWE-400
CWE-772
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-10-09T17:41:07.802Z

Updated: 2026-10-13T20:26:52.261Z

Reserved: 2026-10-08T22:34:49.289Z

Link: CVE-2026-107834

cve-icon Vulnrichment

Updated: 2026-10-13T20:19:12.990Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-09T18:17:05.007

Modified: 2026-10-16T17:16:41.300

Link: CVE-2026-107834

cve-icon Redhat

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