4.3
Medium
CVE-2026-3234 Mod_proxy_cluster: mod_proxy_cluster: response body corruption via crlf injection
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.
CVSS 3.1 detail
Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitable from the adjacent network, without an account and without any user action; the impact on data or service is limited.
- Attack vector
- Adjacent network
- Attack complexity
- Low
- Privileges required
- None
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat JBoss Core Services | Versions not published |
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