https://github.com/squid-cache/squid/commit/d94dbed6c700faeded8c4175f2a8d0f71c15755b.patch
From d94dbed6c700faeded8c4175f2a8d0f71c15755b Mon Sep 17 00:00:00 2001
From: Amos Jeffries <amosjeffries@squid-cache.org>
Date: Wed, 5 Nov 2025 10:23:34 +1300
Subject: [PATCH] Do not show arbitrary hostname in cachemgr.cgi output

--- a/tools/cachemgr.cc
+++ b/tools/cachemgr.cc
@@ -819,7 +819,7 @@ process_request(cachemgr_request * req)
     }
 
     if (!check_target_acl(req->hostname, req->port)) {
-        snprintf(buf, sizeof(buf), "target %s:%d not allowed in cachemgr.conf\n", req->hostname, req->port);
+        snprintf(buf, sizeof(buf), "target host not allowed in cachemgr.conf\n");
         error_html(buf);
         return 1;
     }