Which versions of Open Babel are affected by CVE-2026-2705?

Organizations using Open Babel should be aware of moderate risk from CVE-2026-2705, a buffer overflow vulnerability rated CVSS 4.3. Exploitation could cause memory corruption or application crashes.. A patch is available.

Is there a public PoC exploit available for CVE-2026-2705?

Yes, a public proof-of-concept exploit is available for CVE-2026-2705. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-2705?

Within 30 days: Identify affected systems running Open Babel and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Open Babel CVE-2026-2705

Q: What is the CVSS score of CVE-2026-2705?

CVE-2026-2705 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.1%.

EUVD-2026-7561 LOW

Buffer Overflow (CWE-119)

2026-02-19 cna@vuldb.com

GHSA-3f56-w4g2-mx64

GHSA-4w5w-4fhm-q483

Buffer Overflow Open Babel Babel Openbabel

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

SUSE

4.3 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

4.3 (MEDIUM) 2.1 (LOW)

Analysis Generated

Mar 12, 2026 - 22:03 vuln.today

PoC Detected

Mar 01, 2026 - 07:15 vuln.today

Public exploit code

CVE Published

Feb 19, 2026 - 07:17 nvd

MEDIUM 4.3

DescriptionCVE.org

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.

AnalysisAI

Out-of-bounds memory reads in Open Babel's MOL2 file handler (via OBAtom::SetFormalCharge function) allow remote attackers to trigger denial of service through malicious molecule files. Public exploit code is available for this vulnerability, which remains unpatched as of the advisory date. Versions up to 3.1.1 are affected.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects Open Babel. 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 thro

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.