CVE-2026-2705: Open Babel · Out-of-bounds Read
Affects Open BabelSource CVE Database V5
Not known to be exploited · CVSS 5.3 Medium.
Data as of 26 Oct 2026, 08:30 UTC
- EPSS
- 0.8% chance of exploitation in 30 days – higher than 57% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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:PExploitation evidence
Disclosed: evidence found.
CVE published 19 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Open Babel | Affected
| Fixed in– |
AI-suggested
A patch commit has been identified for this vulnerability, but the vendor has not yet officially released a fix. Users of Open Babel versions 3.1.0 and 3.1.1 should apply the patch identified by commit e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a as soon as possible to remediate the issue. Until an official release is available, manual patching or code review is recommended. Monitor the vendor's channels for an official update.
Description
CVE-2026-2705 is a medium severity vulnerability in Open Babel versions 3.1.0 and 3.1.1. It involves an out-of-bounds read in the function OBAtom::SetFormalCharge within the MOL2 File Handler component. The vulnerability can be triggered remotely and an exploit is publicly available. A patch has been identified but not yet applied or officially released by the project.
References
- vuldb.com (opens in a new tab)
- vuldb.com (opens in a new tab)
- vuldb.com (opens in a new tab)
- github.com/openbabel/openbabel/issues/2848 (opens in a new tab)
- github.com/openbabel/openbabel/pull/2862 (opens in a new tab)
- github.com/oneafter/0128/blob/main/ob2/repro.mol2 (opens in a new tab)
- github.com/VedantMadane/openbabel/commit/e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a (opens in a new tab)