CVE catalog

CVE-2026-2705

openbabel: CVE-2026-2705

Severity: High · CVSS 8.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Published: Feb 19, 2026, 5:02:07 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.84% · Oct 25, 2026

A vulnerability was detected in Open Babel up to 3.1.1. The impacted element is the function OBAtom::SetFormalCharge in the library include/openbabel/atom.h of the component MOL2 File Handler. The manipulation results in out-of-bounds read. It is possible to launch the attack remotely. The exploit is now public and may be used. The patch is identified as e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a. A patch should be applied to remediate this issue. The project was informed of the problem early through an issue report but has not responded yet.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	openbabel	sid	`3.2.0+dfsg-2`	vulnerable
Debian	openbabel	forky	`3.2.0+dfsg-1`	vulnerable
Debian	openbabel	trixie	`3.1.1+dfsg-12`	vulnerable
Debian	openbabel	bookworm	`3.1.1+dfsg-9`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	openbabel	source	sid	`(unfixed)`	not yet assigned	Not reported	[1129566]
Debian	openbabel	source	forky	`(unfixed)`	not yet assigned	Not reported	[1129566]
Debian	openbabel	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1129566]
Debian	openbabel	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1129566]

[Debian bug #1129566]

Notes

[trixie] openbabel: Minor issue [bookworm] openbabel: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libchemistry-openbabel-perl]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-9+b3 · amd64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
- 3.1.1+dfsg-9+b3 · arm64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
[libopenbabel7]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-9+b3 · amd64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
- 3.1.1+dfsg-9+b3 · arm64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
[libopenbabel-dev]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-9+b3 · amd64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
- 3.1.1+dfsg-9+b3 · arm64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
[libopenbabel-doc]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-9 · all · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
- 3.1.1+dfsg-9 · all · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
[openbabel]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-9+b3 · amd64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
- 3.1.1+dfsg-9+b3 · arm64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
[openbabel-gui]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-9+b3 · amd64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
- 3.1.1+dfsg-9+b3 · arm64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
[python3-openbabel]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-9+b3 · amd64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12
- 3.1.1+dfsg-9+b3 · arm64 · bookworm
  Affected
  dsa · openbabel · debian · bookworm; dsa · openbabel · debian · 12

[Debian 13 (Trixie)]

[libchemistry-openbabel-perl]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-12 · amd64 · trixie
  Affected
  dsa · openbabel · debian · 13
- 3.1.1+dfsg-12 · arm64 · trixie
  Affected
  dsa · openbabel · debian · 13
[libopenbabel7]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-12 · amd64 · trixie
  Affected
  dsa · openbabel · debian · 13
- 3.1.1+dfsg-12 · arm64 · trixie
  Affected
  dsa · openbabel · debian · 13
[libopenbabel-dev]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-12 · amd64 · trixie
  Affected
  dsa · openbabel · debian · 13
- 3.1.1+dfsg-12 · arm64 · trixie
  Affected
  dsa · openbabel · debian · 13
[libopenbabel-doc]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-12 · all · trixie
  Affected
  dsa · openbabel · debian · 13
- 3.1.1+dfsg-12 · all · trixie
  Affected
  dsa · openbabel · debian · 13
[openbabel]Affected
Details (2)
- 3.1.1+dfsg-12 · amd64 · trixie
  Affected
  dsa · openbabel · debian · 13
- 3.1.1+dfsg-12 · arm64 · trixie
  Affected
  dsa · openbabel · debian · 13
[openbabel-gui]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-12 · amd64 · trixie
  Affected
  dsa · openbabel · debian · 13
- 3.1.1+dfsg-12 · arm64 · trixie
  Affected
  dsa · openbabel · debian · 13
[python3-openbabel]Affected
Source package: [openbabel]
Details (2)
- 3.1.1+dfsg-12 · amd64 · trixie
  Affected
  dsa · openbabel · debian · 13
- 3.1.1+dfsg-12 · arm64 · trixie
  Affected
  dsa · openbabel · debian · 13

Observed: Oct 24, 2026, 12:39:14 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]