CVE-2026-62676: CVE-2026-62676: Security Guardrail Policy Bypass via Shell-Command Parser Flaws in Omnigent AI Agent Framework

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CVE-2026-62676: Security Guardrail Policy Bypass via Shell-Command Parser Flaws in Omnigent AI Agent Framework

Vulnerability ID: CVE-2026-62676
CVSS Score: 7.1
Published: 2026-09-02

A high-severity security guardrail policy bypass vulnerability was identified in the Omnigent AI agent framework. The shell-command parser failed to correctly identify gated commands wrapped in certain command modifiers, combined interpreter flags, or command substitutions. Consequently, the default fail-open behavior allowed arbitrary execution of restricted operations.

TL;DR

Flaws in Omnigent's shell-command parser allow command wrappers, interactive flags, or command substitutions to bypass security guardrails and run forbidden operations due to a fail-open default.

⚠️ Exploit Status: POC

Technical Details

CWE ID: CWE-184
Attack Vector: Network
CVSS: 7.1
EPSS Score: 0.00295
EPSS Percentile: 21.63%
Impact: Guardrail Policy Bypass
Exploit Status: POC
KEV Status: Not Listed

Affected Systems

Omnigent Framework
Omnigent: < v0.3.0 (Fixed in: v0.3.0)

Code Analysis

Commit: 1a05b7b

Guardrail policy bypass: rewrite shell-command parser to handle wrappers, flags, and substitutions

Exploit Details

GHSA-7mqg-cx4g-x2rf: Proof of concept command strings demonstrating bypass techniques

Mitigation Strategies

Upgrade the Omnigent AI framework to version v0.3.0 or later.
Restrict shell interpreters available within the execution environment.
Configure branch protection rules on repositories mapped to coding agents.

Remediation Steps:

Identify all deployment instances running Omnigent framework versions prior to v0.3.0.
Update dependencies in requirements.txt or poetry configs to target omnigent>=0.3.0.
Apply the patch manually to policies/builtins/_shell.py if direct framework upgrades are barred.
Verify parsing improvements using test suites executing nested command configurations.

References

Read the full report for CVE-2026-62676 on our website for more details including interactive diagrams and full exploit analysis.

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