{"id":"PYSEC-2026-2792","summary":"Open Babel has out-of-bounds write in MOL2 attribute/value parser","details":"### Summary\n\nA memory-safety vulnerability in Open Babel's MOL2 parser allowed an\nout-of-bounds write when reading a crafted input file.\n\n### Details\n\nThe flaw was in the attribute/value parsing path of the MOL2 reader.\nAn over-long attribute or value caused the parser to write past the\nend of a fixed-size destination buffer.\n\n### Impact\n\nOpen Babel is a C++ library and CLI used to read and write chemistry\nfile formats; it is shipped by Linux distributions and embedded in\nservices that may parse untrusted input. Triggering this vulnerability\nrequires the victim to open a malicious MOL2 file with the `obabel`\ntool, the `OBConversion` API, or any of the language bindings (Python,\nRuby, Java, R, Perl, C#, PHP).\n\n### Affected versions\n\nAll releases up to and including 3.1.1.\n\n### Patched version\n\n3.2.0 (released 2026-05-26).\n\n### Patch\n\nFix commit: https://github.com/openbabel/openbabel/commit/4110d59a\n\nA minimized reproducer for this CVE is checked in under\n`test/files/fuzz_regress/` and is exercised on every CI build under\nASAN+UBSAN by the `fuzzregresstest` harness.\n\n### Credit\n\nReported by Cisco TALOS.","aliases":["CVE-2022-43607","GHSA-vjg6-gm8m-v5g6"],"modified":"2026-07-13T16:32:26.324092366Z","published":"2026-07-13T15:46:26.156850Z","references":[{"type":"WEB","url":"https://github.com/openbabel/openbabel/security/advisories/GHSA-vjg6-gm8m-v5g6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-43607"},{"type":"WEB","url":"https://github.com/openbabel/openbabel/commit/4110d59ada242139fb02098e1e1faff57ac4dd51"},{"type":"PACKAGE","url":"https://github.com/openbabel/openbabel"},{"type":"WEB","url":"https://talosintelligence.com/vulnerability_reports/TALOS-2022-1664"},{"type":"WEB","url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1664"},{"type":"PACKAGE","url":"https://pypi.org/project/openbabel"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-vjg6-gm8m-v5g6"}],"affected":[{"package":{"name":"openbabel","ecosystem":"PyPI","purl":"pkg:pypi/openbabel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.0"}]}],"versions":["1.8","1.8.1","1.8.2","1.8.3","1.8.4","2.4.0","2.4.1","3.0.0","3.0.0a1","3.1.1","3.1.1.1"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/openbabel/PYSEC-2026-2792.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}