CVE-2026-3234
Mod_proxy_cluster: mod_proxy_cluster: response body corruption via crlf injection
- State
- Published
- Severity
- 4.3 Medium
- Published
- Mar 12, 2026
- Updated
- Nov 2, 2026
- Reserved
- Feb 26, 2026
Description
A flaw was found in mod_proxy_cluster. This vulnerability, a Carriage Return Line Feed (CRLF) injection in the decodeenc() function, allows a remote attacker to bypass input validation. By injecting CRLF sequences into the cluster configuration, an attacker can corrupt the response body of INFO endpoint responses. Exploitation requires network access to the MCMP protocol port, but no authentication is needed.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | redhat |
Weaknesses
- CWE-93 Improper Neutralization of CRLF Sequences
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat JBoss Core ServicesRed Hat | |
Red Hat JBoss Core ServicesRed Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-3234vdb-entry
- RHBZ#2442889issue-tracking
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