From 127971a93d44ab2210fa0f240fbd2c2182b8550e Mon Sep 17 00:00:00 2001
From: James <james@conan.io>
Date: Wed, 26 Feb 2025 09:48:29 +0100
Subject: [PATCH] disallow relative paths in ConanAPI constructor (#17851)

---
 conan/api/conan_api.py                         |  3 +++
 test/integration/conan_api/test_profile_api.py | 11 +++++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 test/integration/conan_api/test_profile_api.py

diff --git a/conan/api/conan_api.py b/conan/api/conan_api.py
index 30fe82cc217..8a518b21dc6 100644
--- a/conan/api/conan_api.py
+++ b/conan/api/conan_api.py
@@ -1,3 +1,4 @@
+import os
 import sys
 
 from conan.api.output import init_colorama
@@ -35,6 +36,8 @@ def __init__(self, cache_folder=None):
         version = sys.version_info
         if version.major == 2 or version.minor < 6:
             raise ConanException("Conan needs Python >= 3.6")
+        if cache_folder is not None and not os.path.isabs(cache_folder):
+            raise ConanException("cache_folder has to be an absolute path")
 
         init_colorama(sys.stderr)
         self.workspace = WorkspaceAPI(self)
diff --git a/test/integration/conan_api/test_profile_api.py b/test/integration/conan_api/test_profile_api.py
new file mode 100644
index 00000000000..4f06d9d105a
--- /dev/null
+++ b/test/integration/conan_api/test_profile_api.py
@@ -0,0 +1,11 @@
+import pytest
+
+from conan.api.conan_api import ConanAPI
+from conan.errors import ConanException
+
+
+def test_profile_api():
+    # It must be an absolute path
+    with pytest.raises(ConanException) as e:
+        ConanAPI(cache_folder="test")
+    assert "cache_folder has to be an absolute path" in str(e.value)