CVE-2026-42260: Aas-EE Open-Websearch

High severity, CVSS 8.2. EPSS: 0.4% chance of exploitation in the next 30 days.

Open-WebSearch is a multi-engine MCP server, CLI, and local daemon for agent web search and content retrieval. Prior to 2.1.7, isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts do not recognize bracketed IPv6 literals and do not resolve DNS, which combine to allow non-blind SSRF with the response body returned to the caller. This vulnerability is fixed in 2.1.7.

Affected products

• Aas-EE Open-Websearch: before 2.1.7 (fixed in 2.1.7)

Published 2026-05-12. Last modified 2026-06-17.