{"id":"CVE-2026-100693","aliases":["DEBIAN-CVE-2026-100693","EUVD-2026-87666","GHSA-pmrv-x7gp-2rjw","GHSA-xpjr-56xg-vx6v","RHSA-2026:66266","UBUNTU-CVE-2026-100693"],"status":"published","title":"Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass","description":"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.","severity":{"version":"4.0","score":8.6,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00139,"percentile":0.03294,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-178"],"published":"2026-09-10T10:17:14Z","modified":"2026-10-28T02:30:28Z","fixes":[{"ecosystem":"Debian:14","package":"hugo","fixed_in":["0.166.0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:14","package":"hugo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.166.0-1"}]}],"versions":["0.131.0-1","0.131.0-2","0.150.0-1","0.150.1-1","0.151.0-1","0.151.1-1","0.151.2-1","0.152.1-1","0.152.2-1","0.153.0-1","0.153.1-1","0.153.1-2","0.153.1-3","0.153.2-1","0.154.1-1","0.154.2-1","0.154.2-2","0.154.3-1","0.154.5-1","0.155.1-1","0.155.2-1","0.155.3-1","0.157.0-1","0.157.0-2","0.157.0-3","0.158.0-1","0.158.0-2","0.158.0-3","0.159.0-1","0.159.1-1","0.159.2-1","0.160.0-1","0.160.0-2","0.160.1-1","0.161.0-1","0.161.1-1","0.162.1-1","0.162.1-2","0.162.1-3","0.162.1-4","0.162.1-5","0.162.1-6","0.162.1-7","0.165.0-1","0.165.0-2","0.165.0-3"]},{"source":"osv","ecosystem":"Red Hat:hummingbird:1","package":"hugo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.166.0-0.1.hum1"}]}],"bundled":9},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"hugo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.15+git20160109.147.dd1d655-1","0.15+git20160109.147.dd1d655-2","0.15+git20160128.179.5def6d9-1","0.15+git20160206.203.ed23711-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"hugo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.25.1-2","0.26-1","0.35-1","0.37.1-1","0.38-1","0.39-1","0.40-1","0.40.1-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"hugo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.57.2-1","0.58.3-1","0.59.1-1.1","0.68.3-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"hugo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.80.0-6","0.89.4-2","0.90.0-1","0.90.1-1","0.91.0-1","0.91.2-1","0.92.0-1","0.92.1-1build1","0.92.2-1","0.92.2-1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"hugo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.113.0-3","0.119.0-2","0.120.3-1","0.120.4-1","0.121.2-1","0.122.0-1","0.123.7-1build1","0.123.7-1ubuntu0.1","0.123.7-1ubuntu0.2","0.123.7-1ubuntu0.2+esm1","0.123.7-1ubuntu0.3","0.123.7-1ubuntu0.3+esm1","0.123.7-1ubuntu0.3+esm2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"hugo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.154.5-1","0.162.1-5","0.162.1-7"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"hugo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.131.0-1","0.152.2-1","0.153.1-3","0.153.2-1","0.154.2-2","0.154.3-1","0.154.5-1"]}],"products":[{"vendor":"gohugo","product":"hugo"},{"vendor":"gohugoio","product":"hugo"}],"references":[{"url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjw","tags":["vendor-advisory","Vendor Advisory","advisory","article","report"]},{"url":"https://www.vulncheck.com/advisories/hugo-0.162.0-before-0.166.0-ip-literal-deny-rule-bypass","tags":["third-party-advisory","Third Party Advisory","advisory","article","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100693","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-xpjr-56xg-vx6v"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100693.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-100693","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:66266","tags":["advisory"]},{"url":"https://images.redhat.com/","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-10618","tags":["report"]},{"url":"https://access.redhat.com/security/updates/classification/","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-10582","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-44301","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-33812","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-100693","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-100690","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-100694","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-100692","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-100691","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_66266.json","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2521803","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-10582","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-10582","tags":["advisory"]},{"url":"https://github.com/gohugoio/hugo","tags":["article"]},{"url":"https://github.com/gohugoio/hugo/blob/v0.165.0/config/security/securityConfig.go","tags":["article"]},{"url":"https://github.com/gohugoio/hugo/blob/v0.165.0/resources/resource_factories/create/create.go","tags":["article"]},{"url":"https://www.vulncheck.com/advisories/hugo-through-server-side-request-forgery-via-security-http-urls-lacking-destination-address-validation","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2521802","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-10618","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-10618","tags":["advisory"]},{"url":"https://github.com/gohugoio/hugo/blob/v0.165.0/markup/goldmark/codeblocks/render.go","tags":["article"]},{"url":"https://github.com/gohugoio/hugo/blob/v0.165.0/markup/highlight/highlight.go","tags":["article"]},{"url":"https://github.com/gohugoio/hugo/blob/v0.165.0/markup/internal/attributes/attributes.go","tags":["article"]},{"url":"https://www.vulncheck.com/advisories/hugo-through-stored-cross-site-scripting-via-unescaped-code-fence-attribute-values","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2460227","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-33812","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33812","tags":["advisory"]},{"url":"https://go.dev/cl/761180","tags":["article"]},{"url":"https://go.dev/issue/78382","tags":["article"]},{"url":"https://pkg.go.dev/vuln/GO-2026-4962","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2476862","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-44301","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44301","tags":["advisory"]},{"url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-x597-9fr4-5857","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541815","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100690","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100690","tags":["advisory"]},{"url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-x3mx-cm49-8m9c","tags":["article"]},{"url":"https://www.vulncheck.com/advisories/hugo-0.161.0-to-0.165.0-arbitrary-file-read-via-symlinks","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541895","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100691","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100691","tags":["advisory"]},{"url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-q4xf-287f-98r8","tags":["article"]},{"url":"https://www.vulncheck.com/advisories/hugo-before-0.166.0-stored-xss-via-lineanchors-code-block-option","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541910","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100692","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100692","tags":["advisory"]},{"url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-797m-7j5g-3rpr","tags":["article"]},{"url":"https://www.vulncheck.com/advisories/hugo-before-0.166.0-path-traversal-via-symlinked-mount-roots","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541830","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100693","tags":["advisory","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541804","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100694","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100694","tags":["advisory"]},{"url":"https://github.com/gohugoio/hugo/security/advisories/GHSA-pq74-mj4h-cjq2","tags":["article"]},{"url":"https://www.vulncheck.com/advisories/hugo-before-0.166.0-cross-site-scripting-via-text-org","tags":["article"]},{"url":"https://ubuntu.com/security/CVE-2026-100693","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-100693","title":"Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass","description":"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.","status":"published","published":"2026-09-26T13:23:51.556Z","modified":"2026-09-30T17:05:28.149Z","cvss":[{"version":"4.0","score":8.6,"vector":"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","level":"high","assessor":"cna"},{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-178"],"updated_at":"2026-11-02T14:20:06.562031Z"}],"euvd":[{"id":"EUVD-2026-87666","description":"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.","status":"published","published":"2026-09-26T13:23:51Z","modified":"2026-09-30T17:05:28Z","cvss":[{"version":"4.0","score":8.6,"vector":"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","level":"high"}],"updated_at":"2026-11-02T17:27:48.536397Z"}],"ghsa":[{"id":"GHSA-xpjr-56xg-vx6v","title":"Hugo versions from v0.162.0 before v0.166.0 contain a case-sensitive validation flaw in the...","description":"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.","status":"published","published":"2026-09-26T15:31:21Z","modified":"2026-09-26T15:31:23Z","cvss":[{"version":"4.0","score":8.6,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-178"],"updated_at":"2026-11-02T15:12:30.047516Z"}],"nvd":[{"id":"CVE-2026-100693","description":"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.","status":"published","published":"2026-09-26T14:16:54.007Z","modified":"2026-09-30T18:18:01.75Z","cvss":[{"version":"4.0","score":8.6,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-178"],"updated_at":"2026-11-02T14:12:52.081323Z"}],"osv":[{"id":"CVE-2026-100693","title":"Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass","description":"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.","status":"published","published":"2026-09-26T13:23:51.556Z","modified":"2026-10-28T02:30:28.987366542Z","cvss":[{"version":"4.0","score":8.6,"vector":"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","level":"high"}],"cwes":["CWE-178"],"updated_at":"2026-11-02T15:44:53.83521Z"},{"id":"DEBIAN-CVE-2026-100693","description":"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.","status":"published","published":"2026-09-26T14:16:54.007Z","modified":"2026-10-12T05:00:10.42496704Z","cvss":[{"version":"4.0","score":8.6,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:45:48.440897Z"},{"id":"RHSA-2026:66266","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-09-10T10:17:14Z","modified":"2026-10-20T10:43:34.905674371Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:53:22.406388Z"},{"id":"UBUNTU-CVE-2026-100693","description":"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.","status":"published","published":"2026-09-26T14:16:00Z","modified":"2026-10-17T12:57:52.213820056Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":8.6,"vector":"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","level":"high"}],"updated_at":"2026-11-02T16:55:58.519486Z"}]}}
