CVE-2026-30893: Python Os Path Join Decoded Untrusted Write
os.path.join() is being called with a decoded path component (likely parsed from an external/network payload) and the joined result is then opened for writing without containment validation. os.path.join() does not normalize '..' segments, and an absolute right-hand operand silently replaces the base directory, so an attacker-controlled filepath can escape t
Pythongreprules fetch cve-2026-30893-python-os-path-join-decoded-untrusted-write --engine opengrepDescription
os.path.join() is being called with a decoded path component (likely parsed from an external/network payload) and the joined result is then opened for writing without containment validation. os.path.join() does not normalize '..' segments, and an absolute right-hand operand silently replaces the base directory, so an attacker-controlled filepath can escape t
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