{"id":"CVE-2026-45741","revision":"a2baa581fff04f848624bff9da337769","records":[{"revision":"a2baa581fff04f848624bff9da337769","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-45741","aliases":[],"title":"Gotenberg: SSRF deny-list bypass in IsPublicIP via IPv6 6to4 / NAT64 / site-local prefixes","description":"Gotenberg is a Docker-powered stateless API for PDF files. In 8.32.0 and earlier, the IsPublicIP function in pkg/gotenberg/outbound.go does not reject the 2002::/16 6to4 prefix, the 64:ff9b::/96 and 64:ff9b:1::/48 NAT64 prefixes, the fec0::/10 deprecated site-local prefix, Teredo, and other transition prefixes that can embed or route to non-public IPv4 destinations. The addr.Unmap operation only handles IPv4-mapped IPv6 addresses, so a crafted DNS AAAA record can cause the outbound HTTP client to treat an address wrapping an internal destination such as 169.254.169.254 as public. An unauthenticated attacker can use a conversion route with WithDenyPrivateIPs enabled to reach cloud metadata services, and the Chromium URL conversion route can return the internal response as a PDF, potentially exposing cloud credentials. Exploitation requires a deployment whose host routes the relevant IPv6 prefix, such as a dual-stack or NAT64-enabled environment. This issue is fixed in version 8.33.0.","state":0,"publishedAt":"2026-08-19T14:32:50.229+00:00","modifiedAt":"2026-08-19T18:41:18.075+00:00","affected":[{"ecosystem":"Vendor product","name":"gotenberg","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"gotenberg\",\n                    \"product\": \"gotenberg\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 8.33.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/gotenberg/gotenberg/security/advisories/GHSA-86m8-88fq-xfxp","https://github.com/gotenberg/gotenberg/commit/f9a01c9fb308372170ab7fc97b17a118ee8a125c","https://github.com/gotenberg/gotenberg/releases/tag/v8.33.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45741","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-45741","identifiers":["CVE-2026-45741"]},"retained":false,"historicalAffected":[]}],"coverage":[]}