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.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21190-1 advisory.

    Changes in openbabel:

    - Update to version 3.2.0:
      * Add an L-BFGS optimizer, used by default for gen3d and         conformer searches
      * New macrocycle ring builder (Dale codes) for better initial         3D geometry of large rings
      * Add KET (Ketcher JSON) and ChemicalJSON (.cjson) format         support
      * Drop Python 2 support; Python 3.13 supported
      * Faster, vectorized distance-geometry implementation
      * Full CMake 4 compatibility and modernized build
      * Backwards compatible with 3.0 and 3.1
      * Fix many crash and memory-safety bugs found via OSS-Fuzz         and TALOS, including the following security issues:
        CVE-2022-37331 (boo#1217676), CVE-2022-41793, CVE-2022-42885,         CVE-2022-43467, CVE-2022-43607, CVE-2022-44451,         CVE-2022-46280, CVE-2022-46289, CVE-2022-46290,         CVE-2022-46291, CVE-2022-46292, CVE-2022-46294,         CVE-2022-46295, CVE-2025-10994, CVE-2025-10995,         CVE-2025-10996, CVE-2025-10997, CVE-2025-10998,         CVE-2025-10999, CVE-2025-11000,         CVE-2026-2704 (boo#1258501), CVE-2026-2705 (boo#1258507) and         CVE-2026-3408 (boo#1259041)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-2705)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-2705)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
325051	openSUSE 16: libopenbabel8 / openbabel / openbabel-devel / openbabel-gui / etc (openSUSE-SU-2026:21190-1)	Nessus	SuSE Local Security Checks	medium
444137	SCA: security update for openbabel (GHSA-4w5w-4fhm-q483)	Tenable Cloud Security	SCA Checks	medium
444137	SCA: security update for openbabel (GHSA-4w5w-4fhm-q483)	Tenable Self-Hosted Container Security	SCA Checks	medium
299601	Linux Distros Unpatched Vulnerability : CVE-2026-2705	Nessus	Misc.	medium

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CVE-2026-2705

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