Medium severity4.3NVD Advisory· Published Feb 19, 2026· Updated Jun 17, 2026
CVE-2026-2705
CVE-2026-2705
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
openbabelPyPI | < 3.2.0 | 3.2.0 |
Affected products
4cpe:2.3:a:openbabel:open_babel:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:openbabel:open_babel:*:*:*:*:*:*:*:*range: <=3.1.1
- (no CPE)range: <=3.1.1
- osv-coords2 versionspkg:rpm/opensuse/openbabel&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/openbabel&distro=openSUSE%20Tumbleweed
< 3.2.0-bp160.1.1+ 1 more
- (no CPE)range: < 3.2.0-bp160.1.1
- (no CPE)range: < 3.2.0-1.1
Patches
Vulnerability mechanics
References
10- github.com/oneafter/0128/blob/main/ob2/repro.mol2nvdExploitWEB
- github.com/openbabel/openbabel/issues/2848nvdExploitIssue TrackingWEB
- github.com/advisories/GHSA-4w5w-4fhm-q483ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-2705ghsaADVISORY
- vuldb.comnvdThird Party AdvisoryVDB EntryWEB
- vuldb.comnvdThird Party AdvisoryVDB EntryWEB
- github.com/VedantMadane/openbabel/commit/e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08anvdWEB
- github.com/openbabel/openbabel/pull/2862nvdWEB
- github.com/openbabel/openbabel/security/advisories/GHSA-4w5w-4fhm-q483ghsaWEB
- vuldb.comnvdPermissions RequiredVDB EntryWEB
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