Gotenberg has an SSRF deny-list bypass in IsPublicIP via IPv6 6to4 / NAT64 / site-local prefixes in github.com/gotenberg/gotenberg
{ "review_status": "UNREVIEWED", "url": "https://pkg.go.dev/vuln/GO-2026-5244" }
"https://vuln.go.dev/ID/GO-2026-5244.json"