CVE-2026-62676 json
Omnigent Guardrail policy bypass: shell-command parser fails open in policies/builtins/_shell.py
published 2026-08-21 2 mo ago modified 2026-10-14 25 d ago also GHSA-7mqg-cx4g-x2rf , PYSEC-2026-3873 , EUVD-2026-64014
- cvss
- 7.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 34%
- public exploits
- 0
- none known
Summary
Omnigent is an open-source AI agent framework and meta-harness for orchestrating coding agents. Prior to 0.3.0, the shared shell-command parser in omnigent/policies/builtins/_shell.py fails to recognize combined interpreter flags, the timeout, nice, setsid, and stdbuf wrappers, command substitutions, and a single background control operator. A gated git push or gh write hidden with these forms produces no parsed operation, causing the github.py write_repos and write_branches allowlist and the working_dir.py workspace confinement policies to abstain and allow the command. An authenticated or prompt-injected agent can therefore push to an unauthorized repository or branch or escape the intended workspace. This issue is fixed in version 0.3.0.
Patch / fix
- pypi omnigent 0.3.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |
| GitHub | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |
| OSV | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | omnigent | <0.3.0 |
0.3.0 |
Affected products
- omnigent-ai omnigent
Classification
- Weakness
-
- CWE-184 Incomplete List of Disallowed Inputs
References
-
github.com
/omnigent-ai/omnigent/pull/389
web
-
github.com
/omnigent-ai/omnigent/commit/1a05b7b139ef504bf2be89bf37918abe104fb95c
web
-
github.com
/omnigent-ai/omnigent/security/advisories/GHSA-7mqg-cx4g-x2rf
web
-
github.com
/omnigent-ai/omnigent/releases/tag/v0.3.0
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-62676
advisory
-
github.com
/omnigent-ai/omnigent
package
-
pypi.org
/project/omnigent
package
-
github.com
/advisories/GHSA-7mqg-cx4g-x2rf
advisory
Sources
- CVE List CVE-2026-62676
- GitHub Advisory GHSA-7mqg-cx4g-x2rf
- NVD CVE-2026-62676
- OSV PYSEC-2026-3873
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.