{"id":"CVE-2026-100693","summary":"Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass","details":"Hugo versions from v0.162.0 before v0.166.0 contain a case-sensitive validation flaw in the security.http.urls IP-literal deny rule that allows attackers to bypass restrictions. Attackers can use mixed-case URL schemes in resources.GetRemote calls to fetch from restricted IP addresses like localhost.","aliases":["GHSA-pmrv-x7gp-2rjw"],"modified":"2026-09-28T03:48:31.880865926Z","published":"2026-09-26T13:23:51.556Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-178"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100693.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100693.json"},{"type":"ADVISORY","url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100693"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/hugo-0.162.0-before-0.166.0-ip-literal-deny-rule-bypass"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gohugoio/hugo","events":[{"introduced":"076dfe13d0f789e3d9586b192f8f7f3329c26990"},{"fixed":"78400b4de8adc99273d3e674ed6c4d14c3bdf669"}],"database_specific":{"extracted_events":[{"introduced":"0.162.0"},{"fixed":"0.166.0"},{"introduced":"v0.162.0"},{"fixed":"v0.166.0"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["v0.165.0","v0.164.0","v0.163.3","v0.163.2","v0.163.1","v0.163.0","v0.162.1","v0.162.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100693.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}