CVE-2026-80347

mcp-fetch checks a fetch target against its SSRF guard without removing the brackets that surround an IPv6 literal. isSafeUrl reads the hostname from the parsed URL, which for a literal such as http://::1/ yields the bracketed string, and then tests it with net.isIP. That call returns zero for a...

CVE-2026-80347 mcp-fetch through 1.6.3 Server-Side Request Forgery via Unstripped IPv6 Literal Brackets

mcp-fetch checks a fetch target against its SSRF guard without removing the brackets that surround an IPv6 literal. isSafeUrl reads the hostname from the parsed URL, which for a literal such as http://::1/ yields the bracketed string, and then tests it with net.isIP. That call returns zero for a...

CVE-2026-80347

mcp-fetch (npm package @kazuph/mcp-fetch ) through version 1.6.3 contains a Server-Side Request Forgery (SSRF) flaw in its isSafeUrl guard. When a target URL uses an IPv6 literal such as http://[::1]/, the parsed hostname retains the surrounding brackets. The net.isIP check returns zero for the b...

CVE-2026-80347 mcp-fetch through 1.6.3 Server-Side Request Forgery via Unstripped IPv6 Literal Brackets

mcp-fetch checks a fetch target against its SSRF guard without removing the brackets that surround an IPv6 literal. isSafeUrl reads the hostname from the parsed URL, which for a literal such as http://::1/ yields the bracketed string, and then tests it with net.isIP. That call returns zero for a...

CVE-2026-77067 Omnivore Stored Server-Side Request Forgery via the setWebhook Mutation

The setWebhookResolver in packages/api/src/resolvers/webhooks/index.ts stores the caller-supplied url without any address validation, and the file imports no validation helper. When a subscribed event fires, callWebhook in packages/api/src/jobs/callwebhook.ts issues axios.request with that url, t...

CVE-2026-77067 Omnivore Stored Server-Side Request Forgery via the setWebhook Mutation

The setWebhookResolver in packages/api/src/resolvers/webhooks/index.ts stores the caller-supplied url without any address validation, and the file imports no validation helper. When a subscribed event fires, callWebhook in packages/api/src/jobs/callwebhook.ts issues axios.request with that url, t...

CVE-2020-36851: Permissive Cross-domain Policy with Untrusted Domains

Rob--W cors-anywhere instances configured as an open proxy allow unauthenticated external users to induce the server to make HTTP requests to arbitrary targets SSRF. Because the proxy forwards requests and headers, an attacker can reach internal-only endpoints and link-local metadata services,...