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CVE-2026-100693

Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass

CVSS 4.0 8.6 HIGHCVSS 3.1 8.4 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-100693

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-100693

Published

hugo

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "gohugoio",
                    "product": "hugo",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:golang/github.com/gohugoio/hugo",
                    "versions": [
                        {
                            "version": "0.162.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "0.166.0"
                        },
                        {
                            "version": "0.166.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON