What is CVE-2026-40516?

CVE-2026-40516 is a high-severity vulnerability in Hkuds Openharness, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.3/10. Published 2026-04-17.

How severe is CVE-2026-40516?

High severity. CVSS v3 base score is 8.3 out of 10.

SSRF in Hkuds Openharness

CVE-2026-40516

OpenHarness before commit bd4df81 contains a server-side request forgery vulnerability in the web_fetch and web_search tools that allows attackers to access private and localhost HTTP services by manipulating tool parameters without proper…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.000 (10.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.

Affected products

Hkuds Openharness — versions 0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

github.com/HKUDS/OpenHarness/pull/92 (issue-tracking)
github.com/HKUDS/OpenHarness/commit/bd4df81f634f8c7cddcc3fdf7f561a13dcbf03ae (patch)
www.vulncheck.com/advisories/openharness-ssrf-via-web-fetch-and-web-search (third-party-advisory)

Frequently asked questions

What is CVE-2026-40516?: CVE-2026-40516 is a high-severity vulnerability in Hkuds Openharness, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.3/10. Published 2026-04-17.
How severe is CVE-2026-40516?: High severity. CVSS v3 base score is 8.3 out of 10.