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Advisory record · GHSA-rxpr-wq63-jr7p

Open Babel has a NULL pointer dereference in CDXML OBAtom::GetExplicitValence

CVSS 5.3 MediumEPSS 0.0056 · 47th percentile

Published by the GitHub Advisory Database at 30 Jun 2026, 18:47 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
openbabelPyPI<3.2.03.2.0
Identifiers
GHSA-rxpr-wq63-jr7p · CVE-2026-3408 · PYSEC-2026-2791
Weakness (CWE)
CWE-404 · CWE-476
Tags
Published
30 Jun 2026
Updated
13 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Open Babel versions before 3.2.0 (PyPI package openbabel) contain a NULL pointer dereference in the CDXML parser, triggered inside OBAtom::GetExplicitValence when a malformed fragment is read. An attacker can cause a crash by getting a victim to open a crafted CDXML file with obabel, the OBConversion API, or a language binding. Upgrade to openbabel 3.2.0 or later.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.3 Medium 4.0 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 CNA (VulDB)
  • CISA KEV Not listed.
  • EPSS 0.0056, the 47th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:02 UTC First seen by agentprime
  2. 31 Oct 2026, 15:02 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.