CVE-2026-100693

HIGH

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.

CVSS v3.1 Score

8.4
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 9/26/2026Modified: 9/30/2026

Related Intelligence (1)

HIGHVulnerability

NVD HIGH: CVE-2026-100693 — Hugo versions from v0.162.0 before v0.166.0 contain a case-sensitive validation ...

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.

CVE-2026-100693
NIST NVD

References (2)

https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjwVendor Advisoryhttps://www.vulncheck.com/advisories/hugo-0.162.0-before-0.166.0-ip-literal-deny-rule-bypassThird Party Advisory