{"id":"CVE-2026-27018","summary":"Gotenberg: Chromium deny-list bypass via case-insensitive URL scheme","details":"Gotenberg is an API for converting document formats. Prior to version 8.29.0, the fix introduced for CVE-2024-21527 can be bypassed using mixed-case or uppercase URL schemes. This issue has been patched in version 8.29.0.","aliases":["GHSA-jjwv-57xh-xr6r","GO-2026-4905"],"modified":"2026-04-10T05:37:03.974638Z","published":"2026-03-30T20:14:32.860Z","related":["SUSE-SU-2026:1205-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27018.json","cwe_ids":["CWE-22","CWE-918"],"cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27018.json"},{"type":"FIX","url":"https://github.com/gotenberg/gotenberg/commit/06b2b2e10c52b58135edbfe82e94d599eb0c5a11"},{"type":"FIX","url":"https://github.com/gotenberg/gotenberg/commit/8625a4e899eb75e6fcf46d28394334c7fd79fff5"},{"type":"WEB","url":"https://github.com/gotenberg/gotenberg/releases/tag/v8.29.0"},{"type":"ADVISORY","url":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-jjwv-57xh-xr6r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27018"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gotenberg/gotenberg","events":[{"introduced":"0"},{"fixed":"5be574081c79cacd5c05c91d0fa5fd5c7b4a9ea4"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"8.29.0"}]}}],"versions":["1.0.0","2.0.0","3.0.0","3.0.1","3.0.2","3.1.0","3.1.1","3.1.2","3.2.0","4.0.0","4.1.0","4.2.0","4.3.0","4.4.0","5.0.0","5.0.1","5.0.2","5.1.0","6.0.0","6.0.1","6.0.2","6.0.3","6.0.4","6.1.0","6.1.1","6.1.2","6.2.0","6.2.1","6.3.0","6.3.1","6.4.0","6.4.1","6.4.2","6.4.3","6.4.4","v7.0.0","v7.0.1","v7.0.2","v7.0.3","v7.0.4","v7.0.5","v7.0.6","v7.0.7","v7.1.0","v7.1.1","v7.10.0","v7.10.1","v7.2.0","v7.3.0","v7.3.1","v7.4.0","v7.4.1","v7.4.2","v7.4.3","v7.5.0","v7.5.1","v7.5.2","v7.5.3","v7.5.4","v7.6.0","v7.6.1","v7.6.2","v7.7.0","v7.7.1","v7.7.2","v7.8.0","v7.8.1","v7.8.2","v7.8.3","v7.9.0","v7.9.1","v7.9.2","v8.0.0","v8.0.1","v8.0.2","v8.0.3","v8.1.0","v8.10.0","v8.11.0","v8.11.1","v8.12.0","v8.13.0","v8.14.0","v8.14.1","v8.15.0","v8.15.1","v8.15.2","v8.15.3","v8.16.0","v8.17.0","v8.17.1","v8.17.2","v8.17.3","v8.18.0","v8.19.0","v8.19.1","v8.2.0","v8.2.1","v8.2.2","v8.20.0","v8.20.1","v8.21.0","v8.21.1","v8.22.0","v8.23.0","v8.23.1","v8.23.2","v8.24.0","v8.25.0","v8.25.1","v8.26.0","v8.27.0","v8.28.0","v8.3.0","v8.4.0","v8.5.0","v8.5.1","v8.6.0","v8.7.0","v8.8.0","v8.8.1","v8.9.0","v8.9.1","v8.9.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27018.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P"}]}