CVE-2022-39957
mod_security_crs: Charset accept header field resulting in response rule set bypass
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 with a HTTP accept header field containing a charset that can't be decoded by the Web Application Firewall allows a response body bypass, resulting in access to restricted resources.
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-693 · Protection Mechanism Failure