CVE-2026-3408
Open Babel CDXML File atom.cpp GetExplicitValence null pointer dereference
- State
- Published
- Severity
- 5.3 Medium
- Published
- Mar 2, 2026
- Updated
- Mar 2, 2026
- Reserved
- Mar 1, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 4.3 Medium | 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 | VulDB |
| 3.0 | 4.3 Medium | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C | VulDB |
| 2.0 | 5.0 Medium | AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Open Babeln/a |
|
References
- VDB-348303 | Open Babel CDXML File atom.cpp GetExplicitValence null pointer dereferencevdb-entrytechnical-description
- VDB-348303 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #763756 | openbabel Open Babel 3.1.1 and master-branch NULL Pointer Dereferencethird-party-advisory
- https://github.com/openbabel/openbabel/issues/2848issue-tracking
- https://github.com/openbabel/openbabel/pull/2862issue-trackingpatch
- https://github.com/oneafter/0128/blob/main/ob3/repro.cdxmlexploit
- https://github.com/VedantMadane/openbabel/commit/e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08apatch
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.