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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Open Babel | 3.1.0, 3.1.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | openbabel | 3.2.0+dfsg-1 | — |
| Debian 13 | openbabel | No fix yet | — |
| Debian 12 | openbabel | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | openbabel | No fix yet | — |
| Ubuntu 26.04 LTS | openbabel | No fix yet | — |
| Ubuntu 25.10 | openbabel | No fix yet | — |
| Ubuntu 24.04 LTS | openbabel | No fix yet | — |
| Ubuntu 22.04 LTS | openbabel | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | openbabel | No fix yet | — |
| Ubuntu 18.04 LTS | openbabel | No fix yet | — |
| Ubuntu 16.04 LTS | openbabel | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openbabel | 3.2.0-2.1 | openSUSE-SU-2026:11096-1 |
| openSUSE Leap 16.0 | openbabel | 3.2.0-bp160.1.1 | openSUSE-SU-2026:21190-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | openbabel | < 3.2.0 | 3.2.0 | GHSA-rxpr-wq63-jr7p |
Advisories 2
- openSUSE-SU-2026:21190-1 Security update for openbabel SUSE / openSUSE Security Updates · Jul 3, 2026
- openSUSE-SU-2026:11096-1 libopenbabel8-3.2.0-2.1 on GA media SUSE / openSUSE Security Updates · Jun 24, 2026
References
- VDB-348303 | Open Babel CDXML File atom.cpp GetExplicitValence null pointer dereference vdb-entry technical-description
- VDB-348303 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #763756 | openbabel Open Babel 3.1.1 and master-branch NULL Pointer Dereference third-party-advisory
- https://github.com/openbabel/openbabel/issues/2848 issue-tracking
- https://github.com/openbabel/openbabel/pull/2862 issue-tracking patch
- https://github.com/oneafter/0128/blob/main/ob3/repro.cdxml exploit
- https://github.com/VedantMadane/openbabel/commit/e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a patch