{"id":"CVE-2026-45741","sourceIdentifier":"security-advisories@github.com","published":"2026-08-19T15:17:05.023","lastModified":"2026-09-09T21:13:25.910","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"gotenberg","product":"gotenberg","versions":[{"version":"< 8.33.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":4.7}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-19T18:41:11.311035Z","id":"CVE-2026-45741","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-184"},{"lang":"en","value":"CWE-918"}]}],"references":[{"url":"https://github.com/gotenberg/gotenberg/commit/f9a01c9fb308372170ab7fc97b17a118ee8a125c","source":"security-advisories@github.com"},{"url":"https://github.com/gotenberg/gotenberg/releases/tag/v8.33.0","source":"security-advisories@github.com"},{"url":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-86m8-88fq-xfxp","source":"security-advisories@github.com"},{"url":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-86m8-88fq-xfxp","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}