PT-2026-20643 · Open Babel · Open Babel

Oneafter · Published 2026-01-01 · Updated 2026-03-01 · CVE-2026-2704

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Name of the Vulnerable Software and Affected Versions Open Babel versions prior to 3.1.2

Description A security issue exists in Open Babel up to version 3.1.1. The issue involves an out-of-bounds read within the OpenBabel::transform3d::DescribeAsString function located in the src/math/transform3d.cpp file, specifically within the CIF File Handler component. This issue is remotely exploitable and has been publicly disclosed. The project was notified of the problem but has not yet responded.

Recommendations Update to version 3.1.2 or later. As a temporary workaround, consider restricting access to the CIF File Handler component to minimize the risk of exploitation.

Exploit

Fix

Out of bounds Read

Buffer Overflow

Weakness Enumeration

CWE-125

CWE-119

Related Identifiers

CVE-2026-2704

Affected Products

Open Babel

References · 16

• 🔥 https://github.com/openbabel/openbabel/issues/2848 · Exploit
• 🔥 https://github.com/oneafter/0128/blob/main/ob1/repro.cif · Exploit
• https://github.com/openbabel/openbabel/pull/2862 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-2704 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-2704 · Security Note
• https://osv.dev/vulnerability/CVE-2026-2704 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-2704 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-2704 · Vendor Advisory
• https://github.com/VedantMadane/openbabel/commit/e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-2704 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-2704 · Security Note
• https://t.me/cveNotify/153660 · Telegram Post
• https://vuldb.com/?ctiid.346650 · Note
• https://vuldb.com/?id.346650 · Note
• https://twitter.com/CVEnew/status/2025892083106517314 · Twitter Post