{"id":"CVE-2026-100693","title":"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","summary":"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.GetRe…","severity":"high","cvss":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-178"],"vendor":"gohugoio","product":"hugo","affected":["hugo >= 0.162.0 < 0.166.0"],"published":"2026-09-26","updated":"2026-09-26","sourceUpdated":"2026-09-26T14:16:54.007","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100693","references":[{"url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjw","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/hugo-0.162.0-before-0.166.0-ip-literal-deny-rule-bypass","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-26T13:33:20.904Z","slug":"CVE-2026-100693","body":"## Overview\n\nHugo 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}