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Medium · 4.3 CVE-2026-3234 EUVD-2026-11555

Mod_proxy_cluster: mod_proxy_cluster: response body corruption via crlf injection

Published Mar 12, 2026 · Updated Nov 6, 2026 · Assigned by redhat

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.

Affected products

VendorProductAffectedFixed
Red Hat Red Hat Enterprise Linux 10 — —
Red Hat Red Hat Enterprise Linux 9 — —
Red Hat Red Hat JBoss Core Services — —

References