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TI-2026-02315 Aliases CVE-2026-2705GHSA-4w5w-4fhm-q483

Open Babel MOL2 File atom.h SetFormalCharge out-of-bounds

Priority MEDIUM 57CWE-119Published · 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-476.

Summary

A vulnerability was detected in Open Babel up to 3.1.1. The impacted element is the function OBAtom::SetFormalCharge in the library include/openbabel/atom.h of the component MOL2 File Handler. The manipulation results in out-of-bounds read. It is possible to launch the attack remotely. The exploit is now public and may be used. The patch is identified as e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a. A patch should be applied to remediate this issue. The project was informed of the problem early through an issue report but has not responded yet.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00838 58th 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-4w5w-4fhm-q483
  • 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-4w5w-4fhm-q483

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-4w5w-4fhm-q483 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-2026-2705
  2. 2026-10-03 Alias added: GHSA-4w5w-4fhm-q483

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