How severe is CVE-2026-3408?

CVE-2026-3408 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-2026-3408 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3408?

CVE-2026-3408 affects Openbabel Open Babel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3408?

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

Does CVE-2026-3408 have an EU (EUVD) identifier?

Yes. CVE-2026-3408 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9141.

When was CVE-2026-3408 published?

CVE-2026-3408 was published on 2026-03-02 and last updated on 2026-06-17.

CVE-2026-3408

CVE-2026-3408 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-787.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 5.0
CVSS v4: 2.1
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9141
Weakness: CWE-787
Affected product: Openbabel Open Babel
Published: 2026-03-02
Last modified: 2026-06-17

Description

A vulnerability was identified in Open Babel up to 3.1.1. This impacts the function OBAtom::GetExplicitValence of the file isrc/atom.cpp of the component CDXML File Handler. Such manipulation leads to null pointer dereference. The attack can be launched remotely. The exploit is publicly available and might be used. The name of the patch is e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a. It is best practice to apply a patch to resolve this issue.

Frequently asked questions

What is CVE-2026-3408?: A vulnerability was identified in Open Babel up to 3.1.1. This impacts the function OBAtom::GetExplicitValence of the file isrc/atom.cpp of the component CDXML File Handler. Such manipulation leads to null pointer dereference. The attack can be launched remotely. The exploit is publicly available and might be used. The name of the patch is e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a. It is best practice to apply a patch to resolve this issue.
How severe is CVE-2026-3408?: CVE-2026-3408 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-2026-3408 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3408?: CVE-2026-3408 affects Openbabel Open Babel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3408?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3408 have an EU (EUVD) identifier?: Yes. CVE-2026-3408 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9141.
When was CVE-2026-3408 published?: CVE-2026-3408 was published on 2026-03-02 and last updated on 2026-06-17.

References

Affected products (1)

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

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