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TI-2026-02943 Aliases CVE-2026-3408GHSA-rxpr-wq63-jr7p

Open Babel CDXML File atom.cpp GetExplicitValence null pointer dereference

Priority MEDIUM 57CWE-404Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-404.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00558 46th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix Fixed openbabel (PyPI): 3.2.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Open Babel3.1.0; 3.1.1—No fix listedCNA
—openbabel (PyPI)before 3.2.03.2.0Patch availableGHSA-rxpr-wq63-jr7p
  • Open Babel Vendor— Affected 3.1.0; 3.1.1 Fixed in — No fix listed CNA
  • openbabel (PyPI) Vendor— Affected before 3.2.0 Fixed in 3.2.0 Patch available GHSA-rxpr-wq63-jr7p

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openbabel:open_babel:*:*:*:*:*:*:*:*up to 3.1.1VulnerableOpen Babel
  • cpe:2.3:a:openbabel:open_babel:*:*:*:*:*:*:*:* Versions up to 3.1.1 Vulnerable ·Open Babel

Remediation

  • Fix · GHSA-rxpr-wq63-jr7p openbabel (PyPI) Fixed in 3.2.0 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-3408
  2. 2026-10-03 Alias added: GHSA-rxpr-wq63-jr7p
  3. 2026-10-25 EPSS moved to the below the 50th percentile

References

Exploit 2

Patch 2

Advisory 1

Other 2

  • TI-2022-22844 Memory corruption in Open Babel CVSS 3.1CRITICAL 9.8
  • TI-2022-22843 Memory corruption in Open Babel CVSS 3.1CRITICAL 9.8
  • TI-2022-22840 Memory corruption in Open Babel CVSS 3.1CRITICAL 9.8
  • TI-2022-22839 Heap-based buffer overflow in Open Babel CVSS 3.1CRITICAL 9.8
  • TI-2022-22838 Heap-based buffer overflow in Open Babel CVSS 3.1CRITICAL 9.8
  • TI-2022-21850 A use of uninitialized pointer vulnerability exists in the MSI format atom functionality… CVSS 3.1CRITICAL 9.8
See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences