CVE catalog
CVE-2022-39957
modsecurity-crs: CVE-2022-39957
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.00% · Oct 25, 2026
The OWASP ModSecurity Core Rule Set (CRS) is affected by a response body bypass. A client can issue an HTTP Accept header field containing an optional "charset" parameter in order to receive the response in an encoded form. Depending on the "charset", this response can not be decoded by the web application firewall. A restricted resource, access to which would ordinarily be detected, may therefore bypass detection. The legacy CRS versions 3.0.x and 3.1.x are affected, as well as the currently supported versions 3.2.1 and 3.3.2. Integrators and users are advised to upgrade to 3.2.2 and 3.3.3 respectively.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | modsecurity-crs | sid | 3.3.9-1 | fixed |
| Debian | modsecurity-crs | forky | 3.3.9-1 | fixed |
| Debian | modsecurity-crs | trixie | 3.3.7-1+deb13u2 | fixed |
| Debian | modsecurity-crs | trixie-security | 3.3.7-1+deb13u1 | fixed |
| Debian | modsecurity-crs | bookworm | 3.3.4-1+deb12u3 | fixed |
| Debian | modsecurity-crs | bookworm-security | 3.3.4-1+deb12u1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | modsecurity-crs | source | sid | 3.3.4-1 | not yet assigned | Not reported | [1021137] |
| Debian | modsecurity-crs | source | forky | 3.3.4-1 | not yet assigned | Not reported | [1021137] |
| Debian | modsecurity-crs | source | trixie | 3.3.4-1 | not yet assigned | Not reported | [1021137] |
| Debian | modsecurity-crs | source | bookworm | 3.3.4-1 | not yet assigned | Not reported | [1021137] |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [modsecurity-crs]Unknown
Details (4)
3.3.4-1+deb12u3· all · bookwormFixed · Fixed:
3.3.4-1dsa · modsecurity-crs · debian · bookworm
3.3.4-1+deb12u3· all · bookwormFixed · Fixed:
3.3.4-1dsa · modsecurity-crs · debian · bookworm
3.3.4-1+deb12u1· all · bookworm-securityFixed · Fixed:
3.3.4-1dsa · modsecurity-crs · debian · bookworm
3.3.4-1+deb12u1· all · bookworm-securityFixed · Fixed:
3.3.4-1dsa · modsecurity-crs · debian · bookworm
Observed: