Vulnerability · Published Aug 21, 2026 · Assigned by GitHub_M
CVE-2026-62674Omnigent: Shared Agent Bundle Overwrite Leads to Authenticated Runner RCE
Critical 9.0
In plain English
A critical-severity code injection in omnigent from omnigent-ai. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Omnigent is an open-source AI agent framework and meta-harness for orchestrating coding agents. Prior to 0.3.0, PUT /sessions/{session_id}/agent checks LEVEL_EDIT permission for a session but does not reject a bound shared or template agent whose agent.session_id is None. An authenticated user with edit access to a session can replace that shared agent bundle through omnigent/server/routes/sessions.py, add a stdio MCP server, and cause later sessions that use the shared agent to launch an attacker-controlled command through omnigent/tools/mcp.py. The command executes with the Omnigent runner process permissions and can expose files, credentials, workspace data, internal services, and runner availability. This issue is fixed in version 0.3.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | omnigent | 0.3.0 | GHSA-jrrm-9hc7-2v3h |
| PyPI | omnigent | 0.3.0 | PYSEC-2026-3874 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| omnigent-ai | omnigent | < 0.3.0 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
References
- https://github.com/omnigent-ai/omnigent/security/advisories/GHSA-jrrm-9hc7-2v3h x_refsource_CONFIRM
- https://github.com/omnigent-ai/omnigent/pull/1418 x_refsource_MISC
- https://github.com/omnigent-ai/omnigent/commit/25a22dc9e6da4648d23749f0a589e47e6aed991b x_refsource_MISC
- https://github.com/omnigent-ai/omnigent/releases/tag/v0.3.0 x_refsource_MISC