From 2b550f3e66bdb3da6d229efc0a6ee89d2c21b9b7 Mon Sep 17 00:00:00 2001
From: Richard Bullington-McGuire <richard.bullington.mcguire@gmail.com>
Date: Thu, 16 Jan 2025 11:34:50 -0500
Subject: [PATCH] Potential fix for code scanning alert no. 22: Uncontrolled
 data used in path expression

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
---
 freezing/web/views/api.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/freezing/web/views/api.py b/freezing/web/views/api.py
index bfc5b74..2ce5176 100644
--- a/freezing/web/views/api.py
+++ b/freezing/web/views/api.py
@@ -422,6 +422,8 @@ def _get_cached(key: str, compute):
 
         content = compute()
         cache_file.parent.mkdir(parents=True, exist_ok=True)
+        if not str(cache_file).startswith(str(Path(cache_dir).resolve()) + os.sep):
+            raise Exception("Invalid cache file path")
         cache_file.write_bytes(content)
 
         return content