From acdf34ea285065565e91f2e2f0b5c09e86ae0446 Mon Sep 17 00:00:00 2001
From: Alex Rousskov <rousskov@measurement-factory.com>
Date: Sat, 20 Jun 2026 16:15:17 +0000
Subject: [PATCH] Do not leak memory when reading FTP CWD responses (#2445)

The bug affected a subset of HTTP transactions with `ftp://` URLs.
It was introduced in 2009 commit 0477a072.
---
 src/clients/FtpGateway.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/clients/FtpGateway.cc b/src/clients/FtpGateway.cc
index e9031ce41a..664387e8f6 100644
--- a/src/clients/FtpGateway.cc
+++ b/src/clients/FtpGateway.cc
@@ -1497,7 +1497,7 @@ ftpReadCwd(Ftp::Gateway * ftpState)
             ftpState->cwd_message.append('\n');
             ftpState->cwd_message.append(w->key);
         }
-        ftpState->ctrl.message = nullptr;
+        wordlistDestroy(&ftpState->ctrl.message);
 
         /* Continue to traverse the path */
         ftpTraverseDirectory(ftpState);
-- 
2.47.3