CVE-2026-3408
Medium
Description
A vulnerability was identified in Open Babel up to 3.1.1. This impacts the function OBAtom::GetExplicitValence of the file isrc/atom.cpp of the component CDXML File Handler. Such manipulation leads to null pointer dereference. The attack can be launched remotely. The exploit is publicly available and might be used. The name of the patch is e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a. It is best practice to apply a patch to resolve this issue.
SeverityMedium
CVSS4.3
Exploit probability—
ProductOpenbabel Open Babel
PublishedMar 2, 2026
First seenMar 2, 2026
Weakness typeCWE-476NULL pointer dereferenceCWE-404CWE-404
How to fix
Update
- openbabel3.2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openbabel open_babel | v ≤ 3.1.1 | — |
| openbabelPyPI | v < 3.2.0 | 3.2.0 |
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