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.

CVSS v3 4.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/VedantMadane/openbabel/commit/e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a
https://github.com/oneafter/0128/blob/main/ob2/repro.mol2	Exploit
https://github.com/openbabel/openbabel/issues/2848	Exploit Issue Tracking
https://github.com/openbabel/openbabel/pull/2862
https://vuldb.com/?ctiid.346651	Permissions Required VDB Entry
https://vuldb.com/?id.346651	Third Party Advisory VDB Entry
https://vuldb.com/?submit.754379	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:openbabel:open_babel:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-19 07:17

Updated : 2026-03-01 07:15

NVD link : CVE-2026-2705

Mitre link : CVE-2026-2705

CVE.ORG link : CVE-2026-2705

JSON object : View

Products Affected

openbabel

open_babel

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-125

Out-of-bounds Read

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