{"id":"CVE-2022-43607","aliases":["GHSA-vjg6-gm8m-v5g6","PYSEC-2026-2792"],"url":"https://o3.security/vulnerability/CVE-2022-43607","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.","published":"2023-07-21T21:15:10.497Z","modified":"2026-07-13T16:42:55.192906655Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":{"score":0.00782,"percentile":0.54225,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"openbabel","fixedVersion":"3.2.0"}],"fix":{"url":"https://github.com/openbabel/openbabel/commit/4110d59ada242139fb02098e1e1faff57ac4dd51","label":"openbabel/openbabel@4110d59"},"references":[{"type":"WEB","url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1664"},{"type":"EVIDENCE","url":"https://talosintelligence.com/vulnerability_reports/TALOS-2022-1664"},{"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-13T16:42:55.192906655Z"}}