Path Traversal in Hkuds Openharness

CVE-2026-40503

OpenHarness prior to commit dd1d235 contains a path traversal vulnerability that allows remote gateway users with chat access to read arbitrary files by supplying path traversal sequences to the /memory show slash command. Attackers can manipulate the path input parameter to escape the project memory directory and access sensitive files accessible to the OpenHarness process without filesystem containment validation.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.004 (35.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-40503?
CVE-2026-40503 is a medium-severity vulnerability in Hkuds Openharness, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-04-16.
How severe is CVE-2026-40503?
Medium severity. CVSS v3 base score is 6.5 out of 10.