CVE-2026-100693
Published:September 26, 2026
Updated:October 10, 2026
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.
Affected Packages
https://github.com/gohugoio/hugo.git (GITHUB):
Affected version(s) >=v0.162.0 <v0.166.0Fix Suggestion:
Update to version v0.166.0github.com/gohugoio/hugo (GO):
Affected version(s) >=v0.162.0 <v0.166.0Fix Suggestion:
Update to version v0.166.0Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.6
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.4
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Handling of Case Sensitivity
EPSS
Base Score:
0.14