CVE-2026-3408

MEDIUM 4.3

Open Babel CDXML File atom.cpp GetExplicitValence null pointer dereference

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-476 CWE-404
Vendor	n/a
Product	open babel
Published	Mar 2, 2026
Last Updated	Mar 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / Open Babel

3.1.0 3.1.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.348303 vuldb.com: https://vuldb.com/?ctiid.348303 vuldb.com: https://vuldb.com/?submit.763756 github.com: https://github.com/openbabel/openbabel/issues/2848 github.com: https://github.com/openbabel/openbabel/pull/2862 github.com: https://github.com/oneafter/0128/blob/main/ob3/repro.cdxml github.com: https://github.com/VedantMadane/openbabel/commit/e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a

Credits

🔍 Oneafter (VulDB User)