CVE-2026-42260

Open-WebSearch CVE-2026-42260 describes a SSRF in fetchWebContent of the MCP tool where bracketed IPv6 literals and lack of DNS resolution allow bypassing the public URL checks. The vulnerability arises because isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts treat bracketed IPv6 h...

GHSA-V228-72C7-FX8J open-websearch has SSRF in `fetchWebContent` MCP tool: bracketed IPv6 literals and non-resolving hostname check bypass `isPrivateOrLocalHostname`

Summary src/utils/urlSafety.ts exposes isPublicHttpUrl / assertPublicHttpUrl, used to gate the MCP fetchWebContent tool against private-network targets. The check has two defects that together allow non-blind SSRF with the response body returned to the caller: 1. Bracketed IPv6 literals are never...

GHSA-R2X7-427F-RQ69 Ech0 has SSRF via DNS Resolution Bypass in Webhook URL Validation

Summary The validateWebhookURL function in webhooksettingservice.go attempts to block webhooks targeting private/internal IP addresses, but only checks literal IP strings via net.ParseIP. Hostnames that DNS-resolve to private IPs e.g., 169.254.169.254.nip.io, 10.0.0.1.nip.io bypass all checks,...