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.

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 ma…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.000 (3.3th 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

Hkuds Openharness — versions 0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/HKUDS/OpenHarness/pull/127 (issue-tracking)
github.com/HKUDS/OpenHarness/commit/dd1d235450dd987b20bff01b7bfb02fe8620a0af (patch)
www.vulncheck.com/advisories/openharness-path-traversal-information-disclosure-… (third-party-advisory)

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.