Vulnerability · Published Apr 7, 2026 · Assigned by VulnCheck

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

High 7.1

In plain English

A high-severity incorrect authorization in OpenHarness from HKUDS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 3.1)7.1High

Exploit odds (30 days)0.1%top 97.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
HKUDS	OpenHarness	0 – before 166fcfefb7614dbac51bd061f56542725b0298e9

Weakness: CWE-863 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References

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