How severe is CVE-2026-2705?

CVE-2026-2705 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-2705 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2705?

CVE-2026-2705 affects Openbabel Open Babel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-2705?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-2705 have an EU (EUVD) identifier?

Yes. CVE-2026-2705 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7561.

When was CVE-2026-2705 published?

CVE-2026-2705 was published on 2026-02-19 and last updated on 2026-06-17.

CVE-2026-2705

CVE-2026-2705 is a medium-severity vulnerability in Openbabel Open Babel with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 5.0
CVSS v4: 2.1
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7561
Weakness: CWE-119
Affected product: Openbabel Open Babel
Published: 2026-02-19
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-2705?: CVE-2026-2705 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-2705 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2705?: CVE-2026-2705 affects Openbabel Open Babel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-2705?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-2705 have an EU (EUVD) identifier?: Yes. CVE-2026-2705 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7561.
When was CVE-2026-2705 published?: CVE-2026-2705 was published on 2026-02-19 and last updated on 2026-06-17.

References

Affected products (1)

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

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