EUVD-2026-23452
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionNVD
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.
AnalysisAI
Server-Side Request Forgery in OpenHarness AI agent framework (pre-commit bd4df81) permits remote unauthenticated attackers to manipulate web_fetch and web_search tool parameters, forcing the agent to make HTTP requests to internal infrastructure including RFC1918 private networks, localhost services, and cloud metadata endpoints (e.g., AWS EC2 169.254.169.254). Changed scope (S:C) in CVSS vector indicates potential for pivoting beyond the vulnerable application's trust boundary. …
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RemediationAI
Within 24 hours: Identify all systems running OpenHarness AI agent framework and document current deployment versions. Within 7 days: Apply vendor patch by upgrading to commit bd4df81 or later across all production and non-production instances. …
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External POC / Exploit Code
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