CVE-2026-100693

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 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjw	Vendor Advisory
https://www.vulncheck.com/advisories/hugo-0.162.0-before-0.166.0-ip-literal-deny-rule-bypass	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gohugo:hugo:*:*:*:*:*:*:*:*

History

29 Sep 2026, 19:07

Type	Values Removed	Values Added
References	~~() https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjw -~~	() https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjw - Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/hugo-0.162.0-before-0.166.0-ip-literal-deny-rule-bypass -~~	() https://www.vulncheck.com/advisories/hugo-0.162.0-before-0.166.0-ip-literal-deny-rule-bypass - Third Party Advisory
First Time		Gohugo Gohugo hugo
CPE		cpe:2.3:a:gohugo:hugo::::::::

26 Sep 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-26 14:16

Updated : 2026-09-30 18:18

NVD link : CVE-2026-100693

Mitre link : CVE-2026-100693

CVE.ORG link : CVE-2026-100693

JSON object : View

Products Affected

gohugo

hugo

CWE

CWE-178

Improper Handling of Case Sensitivity

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