ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx.
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. From 3.0.0 until 3.0.17, ModSecurity's multipart parser does not apply the RFC 2231 filename* parameter precedence used by common Go, Python, Node.js, and Java application parsers. A Content-Disposition header can provide a benign filename parameter for ModSecurity and a different encoded filename* value that the backend prefers, causing MULTIPART_FILENAME rules and the application to make security decisions on different names. Applications that use the backend-selected name for storage, extension checks, or content-type inference can therefore receive a filename that bypassed WAF i
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Owasp-Modsecurity
- Product
- ModSecurity
- CVSS v3.1
- 8.6 AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
- Fix
- available
- Weakness
- CWE-436
- Exposure class
- Web platform, Developer platform
- NVD status
- Received
Why it ranks 41 (Notable)
- CVSS v3.1 8.6 high
- Product class: web platform, developer platform
- Widely deployed vendor product (Owasp-Modsecurity)
- Fix available
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-104269 on this site · NVD · CVE.org · Vulnpedia
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