Vulnerabilidades do Owasp Owasp Modsecurity Core Rule Set

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CVEs publicadas que afetam Owasp Owasp Modsecurity Core Rule Set: 2 registro(s), com versões afetadas e correções.
cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set

CVE-2026-33691 Alta · 7.5 CWE-178 02/04/2026

OWASP CRS: Whitespace padding in filenames bypasses file upload extension checks

The OWASP core rule set (CRS) is a set of generic attack detection rules for use with compatible web application firewalls. Prior to versions 3.3.9 and 4.25.0, a bypass was identified in OWASP CRS that allows uploading files with dangerous extensions (.php, .phar, .jsp, .jspx) by inserting whitespace padding in the filename (e.g. photo. php or shell.jsp ). The affected rules do not normalize whitespace before evaluating the file extension regex, so the dot-extension check fails to match. This issue has been patched in versions 3.3.9 and 4.25.0.

CVE-2026-21876 Média · 5.3 Exploit público CWE-794 08/01/2026

OWASP CRS has multipart bypass using multiple content-type parts

The OWASP core rule set (CRS) is a set of generic attack detection rules for use with compatible web application firewalls. Prior to versions 4.22.0 and 3.3.8, the current rule 922110 has a bug when processing multipart requests with multiple parts. When the first rule in a chain iterates over a collection (like `MULTIPART_PART_HEADERS`), the capture variables (`TX:0`, `TX:1`) get overwritten with each iteration. Only the last captured value is available to the chained rule, which means malicious charsets in earlier parts can be missed if a later part has a legitimate charset. Versions 4.22.0 and 3.3.8 patch the issue.