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VulnerabilityPublished

CVE-2026-3408: Open Babel · NULL Pointer Dereference

Affects Open BabelSource CVE Database V5

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Public exploit available · CVSS 5.3 Medium.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 4.0 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Open BabelAffected
  • =3.1.0
  • =3.1.1
Fixed in–
GitHubopenbabel/openbabelpkg:github/openbabel/openbabelOther threatsAffected
  • =3.1.0
  • =3.1.1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available to remediate this vulnerability, identified by commit e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a. It is recommended to apply this patch to Open Babel versions 3.1.0 and 3.1.1 to resolve the issue. No vendor advisory content was provided, so verify with the official Open Babel sources for the patch details and application instructions.

Description

A medium severity vulnerability (CVE-2026-3408) exists in Open Babel versions 3.1.0 and 3.1.1. It involves a NULL pointer dereference in the OBAtom::GetExplicitValence function within the CDXML File Handler component. This flaw can be triggered remotely and has a publicly available exploit. A patch identified by commit e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a is available to address the issue.

References

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