CVE-2026-3408: Open Babel has a NULL pointer dereference in CDXML OBAtom::GetExplicitValence
A memory-safety vulnerability in Open Babel’s CDXML file format parser caused a NULL pointer dereference when reading a crafted input file.
References
- github.com/VedantMadane/openbabel/commit/e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a
- github.com/advisories/GHSA-rxpr-wq63-jr7p
- github.com/oneafter/0128/blob/main/ob3/repro.cdxml
- github.com/openbabel/openbabel/issues/2848
- github.com/openbabel/openbabel/pull/2862
- github.com/openbabel/openbabel/security/advisories/GHSA-rxpr-wq63-jr7p
- nvd.nist.gov/vuln/detail/CVE-2026-3408
- vuldb.com/?ctiid.348303
- vuldb.com/?id.348303
- vuldb.com/?submit.763756
Code Behaviors & Features
Detect and mitigate CVE-2026-3408 with GitLab Dependency Scanning
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