Vulnerability Details CVE-2026-2705
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 18.3%
CVSS Severity
CVSS v3 Score 4.3
CVSS v2 Score 5.0
References
- https://github.com/VedantMadane/openbabel/commit/e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a
- https://github.com/oneafter/0128/blob/main/ob2/repro.mol2
- https://github.com/openbabel/openbabel/issues/2848
- https://github.com/openbabel/openbabel/pull/2862
- https://vuldb.com/?ctiid.346651
- https://vuldb.com/?id.346651
- https://vuldb.com/?submit.754379
Products affected by CVE-2026-2705
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cpe:2.3:a:openbabel:open_babel:2.0.0
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cpe:2.3:a:openbabel:open_babel:2.0.1
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cpe:2.3:a:openbabel:open_babel:2.0.2
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cpe:2.3:a:openbabel:open_babel:2.1.0
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cpe:2.3:a:openbabel:open_babel:2.1.1
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cpe:2.3:a:openbabel:open_babel:2.2.0
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cpe:2.3:a:openbabel:open_babel:2.2.1
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cpe:2.3:a:openbabel:open_babel:2.2.2
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cpe:2.3:a:openbabel:open_babel:2.2.3
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cpe:2.3:a:openbabel:open_babel:2.3.0
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cpe:2.3:a:openbabel:open_babel:2.3.1
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cpe:2.3:a:openbabel:open_babel:2.3.2
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cpe:2.3:a:openbabel:open_babel:2.4.0
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cpe:2.3:a:openbabel:open_babel:3.0.0
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cpe:2.3:a:openbabel:open_babel:3.1.0
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cpe:2.3:a:openbabel:open_babel:3.1.1