CVE-2026-104269: owasp-modsecurity ModSecurity

ModSecurity: RFC 2231 `filename*` Parameter Bypasses Multipart Filename Rules on RFC-Compliant Backends (Go, Python, Node, Java)

CVSS 8.6 High

Published by the CVE Program (CNA: GitHub_M) at 5 Nov 2026, 15:51 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
owasp-modsecurity	ModSecurity	affected >= 3.0.0, < 3.0.17

Identifiers

CVE-2026-104269

CNA

GitHub_M

Weakness (CWE)

CWE-436

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.6	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS No score.

Timeline

5 Nov 2026, 15:51 UTC Confirmed by the CVE List
5 Nov 2026, 15:59 UTC First seen by agentprime
5 Nov 2026, 16:17 UTC Confirmed by NVD

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.