Open Babel up to version 3.1.1 (and by extension all versions prior to 3.2.0) contains a heap buffer overflow vulnerability in the OBSmilesParser::ParseSmiles function located in /src/formats/smilesformat.cpp. Exploitation requires local access and involves manipulation that triggers the overflow. The advisory is a duplicate and has been withdrawn, but the vulnerability remains publicly known. No official patch or remediation details are provided in this advisory.

The vulnerability allows a local attacker to cause a heap-based buffer overflow, which could potentially lead to memory corruption or application crashes. The severity is rated low, indicating limited impact or difficulty in exploitation. There are no known exploits in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or fix information is provided, users should monitor official Open Babel advisories for updates. No specific mitigations are stated in the advisory.