Is CVE-2026-51853 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-51853 being exploited in the wild.

How severe is CVE-2026-51853?

Informational severity, published 30 September 2026.

Which products and versions are affected?

Agent0ai Agent Zero 1.7, 1.8, 1.9, 1.10.

Is there a fix for CVE-2026-51853?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-51853 attacked?

It is attacked over the network or with local access, in a software library.

Am I affected by CVE-2026-51853?

Check whether you run Agent0ai Agent Zero at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-51853: agent-zero directory traversal in file browser initialization

CVE-2026-51853 · Severity: info · Published 2026-09-30

agent-zero is an AI agent framework that includes a file browser component for accessing files on the system. In versions 1.7 through 1.10, the file browser initializes with the host root directory as its workspace, allowing unrestricted access to any file on the system. An attacker can instruct the agent to read sensitive files like SSH keys, password files, or environment variables, leading to complete filesystem compromise.

Technologies: Agent0ai Agent Zero. Vendors: Agent0ai.

Quick answers

Is CVE-2026-51853 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-51853 being exploited in the wild.
How severe is CVE-2026-51853?: Informational severity, published 30 September 2026.
Which products and versions are affected?: Agent0ai Agent Zero 1.7, 1.8, 1.9, 1.10.
Is there a fix for CVE-2026-51853?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-51853 attacked?: It is attacked over the network or with local access, in a software library.
Am I affected by CVE-2026-51853?: Check whether you run Agent0ai Agent Zero at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The FileBrowser class in python/helpers/file_browser.py initializes its workspace to the root directory ("/") without applying path restrictions or validation. This eliminates workspace isolation, allowing the agent to traverse and access any file the process has permissions for via file read operations. The vulnerability is reachable through the web service endpoint /edit_work_dir_file without proper access controls.

Affected products

agent0ai agent-zero 1.7, 1.8, 1.9, 1.10

Timeline

2026-09-30: disclosed: CVE-2026-51853 published
2026-04-20: other: Issue #1539 opened on GitHub

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.