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GHSA-mjmg-352j-f456

HighCVSS 7.8 / 10
Published Jul 1, 2026·Last modified Jul 1, 2026
Affected Components(0)

No affected components available

Description

Summary

A memory-safety vulnerability in Open Babel's MOPAC input parser allowed an out-of-bounds write into the translationVectors[] array when reading Tv (translation-vector) atoms from a crafted input file.

Details

The MOPAC IN reader stored Tv-atom translation vectors into a fixed-size translationVectors[] array. A malformed input with more than three Tv atoms (or three plus extras) could push more vectors than the array had slots, causing a write past the end of the array. One of five translationVectors[] OOB writes in the TALOS 2022 batch.

Impact

Open Babel is a C++ library and CLI used to read and write chemistry file formats; it is shipped by Linux distributions and embedded in services that may parse untrusted input. Triggering this vulnerability requires the victim to open a malicious MOPAC input file with the obabel tool, the OBConversion API, or any of the language bindings (Python, Ruby, Java, R, Perl, C#, PHP).

Affected versions

All releases up to and including 3.1.1.

Patched version

3.2.0 (released 2026-05-26).

Patch

Fix commit: https://github.com/openbabel/openbabel/commit/40e85213

A minimized reproducer for this CVE is checked in under test/files/fuzz_regress/ and is exercised on every CI build under ASAN+UBSAN by the fuzzregresstest harness.

Credit

Reported by Cisco TALOS.

Risk Scores
Base Score
7.8

The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
7.1

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Related Vulnerabilities
  • CVE-2022-46294
    Alias
  • EUVD-2022-49112
    Alias

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