🛡️ CVE-2026-40516
🟠 CVSS 8.3 — High ⚠️ Exploit Public CWE-918 NVD
8.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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 validation of target addresses. Attackers can influence an agent session to invoke these tools against loopback, RFC1918, link-local, or other non-public addresses to read response bodies from local development services, cloud metadata endpoints, admin panels, or other private HTTP services reachable from the victim host.

Details

Severity HIGH
CVSS Score 8.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
CWE CWE-918
Public Exploit ⚠️ Yes
Source NVD
Published 2026-04-17
Updated 2026-06-02
Modified 2026-04-24

Affected Packages

Software From version Fixed in
openharness 2026-04-11

Similar Threats

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