https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-08T23:11:14.967405+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2025-10996 CVE-2025-10996 — Open Babel smilesformat.cpp ParseSmiles heap-based overflow 2026-10-08T23:11:14.968851+00:00

Affected: Open Babel

A vulnerability was detected in Open Babel up to 3.1.1. This issue affects the function OBSmilesParser::ParseSmiles of the file /src/formats/smilesformat.cpp. Performing manipulation results in heap-based buffer overflow. The attack needs to be approached locally. The exploit is now public and may be used.

 https://cve.radiocsirt.org/vuln/ghsa-j35x-w4gj-pf7w GHSA-j35x-w4gj-pf7w — Open Babel has heap buffer overflow in SMILES OBSmilesParser::ParseSmiles 2026-10-08T23:11:14.968905+00:00

Affected: PyPI: openbabel

### Summary

A memory-safety vulnerability in Open Babel's SMILES parser caused a heap buffer overflow when reading a crafted input string.

### Details

The flaw was in `OBSmilesParser::ParseSmiles`. A malformed SMILES input caused the parser to write past the end of a heap-allocated buffer.

### Impact

Open Babel is a C++ library and CLI used to read and write chemistry file formats; it is shipped by Linux distributions and embedded in services that may parse untrusted input. Triggering this vulnerability requires the victim to parse a malicious SMILES string with the `obabel` tool, the `OBConversion` API, or any of the language bindings (Python, Ruby, Java, R, Perl, C#, PHP). SMILES strings are commonly passed on the command line and through scripted pipelines, so this primitive is especially reachable.

### Affected versions

All releases up to and including 3.1.1.

### Patched version

3.2.0 (released 2026-05-26).

### Patch

Fix commit: https://github.com/openbabel/openbabel/commit/b34cd604 Originally reported as #2831; fixes consolidated in #2913.

A minimized reproducer for this CVE is checked in under `test/files/fuzz_regress/` and is exercised on every CI build under ASAN+UBSAN by the `fuzzregresstest` harness.

### Credit

Reported via OSS-Fuzz.