{"cve":"CVE-2026-42596","nvd":{"published":"2026-05-14T16:16:22.893","modified":"2026-06-17T10:48:08.020","status":"Analyzed","description":"Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, the default deny-lists used by Gotenberg's downloadFrom feature and webhook feature are bypassable. Because the filter is regex-based and case-sensitive, an unauthenticated attacker can supply URLs such as http://[::ffff:127.0.0.1]:... and reach loopback or private HTTP services that the default deny-list is intended to block. This crosses a real security boundary because an external caller can force the server to make outbound requests to internal-only targets. This vulnerability is fixed in 8.31.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","score":9.4},"cwes":["CWE-918"],"references":["https://github.com/gotenberg/gotenberg/security/advisories/GHSA-4vmc-gm8v-m35h","https://github.com/gotenberg/gotenberg/security/advisories/GHSA-4vmc-gm8v-m35h"],"products":["thecodingmachine:gotenberg"],"source":"nvd","synced_at":"2026-10-19T22:35:16.954578616+00:00"},"epss":{"cve":"CVE-2026-42596","score":0.01589,"percentile":0.75642,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-4vmc-gm8v-m35h","url":"https://osv.dev/vulnerability/GHSA-4vmc-gm8v-m35h","summary":"Gotenberg vulnerable to unauthenticated SSRF via default deny-list bypass in downloadFrom and webhook","modified":"2026-06-25T18:56:11.574811179Z","packages":[{"ecosystem":"Go","name":"github.com/gotenberg/gotenberg/v8","purl":"pkg:golang/github.com/gotenberg/gotenberg/v8","ranges":["<8.32.0"],"fixed":["8.32.0"]}]},{"id":"GO-2026-5132","url":"https://osv.dev/vulnerability/GO-2026-5132","summary":"Gotenberg vulnerable to unauthenticated SSRF via default deny-list bypass in downloadFrom and webhook in github.com/gotenberg/gotenberg","modified":"2026-06-25T18:45:25.242939255Z","packages":[{"ecosystem":"Go","name":"github.com/gotenberg/gotenberg/v7","purl":"pkg:golang/github.com/gotenberg/gotenberg/v7","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/gotenberg/gotenberg/v8","purl":"pkg:golang/github.com/gotenberg/gotenberg/v8","ranges":["<8.32.0"],"fixed":["8.32.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}