CVE-2022-39956
mod_security_crs: Content-Type or Content-Transfer-Encoding MIME header fields abuse
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 19, 2022
Updated · November 21, 2025
Description
A flaw was found in the OWASP ModSecurity Core Rule Set. A payload that uses a character encoding scheme via the Content-Type or the deprecated Content-Transfer-Encoding multipart MIME header fields allows HTTP multipart requests to bypass detection.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE-863 · Incorrect Authorization