From 51f5fa9a452ad5b240bc0415e12ac46bcb131bfe Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Fri, 16 Oct 2026 18:04:17 -0400
Subject: [PATCH] stop parsing HTTP header if next line is too long

---
 libi2pd_client/I2PTunnel.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libi2pd_client/I2PTunnel.cpp b/libi2pd_client/I2PTunnel.cpp
index 3e73be57..70ceb88c 100644
--- a/libi2pd_client/I2PTunnel.cpp
+++ b/libi2pd_client/I2PTunnel.cpp
@@ -423,6 +423,12 @@ namespace client
 				}
 				else
 				{
+					if (line.length () > I2P_TUNNEL_HTTP_MAX_HEADER_SIZE)
+					{
+						LogPrint (eLogError, "I2PTunnel: HTTP header line exceeds max size ", I2P_TUNNEL_HTTP_MAX_HEADER_SIZE);
+						Terminate ();
+						return;
+					}
 					// insert incomplete line back
 					m_InHeader.clear ();
 					m_InHeader << line;