High severity · published Sep 26, 2026
CVE-2026-100693
Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass
8.4
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
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
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HU
hugo · gohugoio
0.162.0 before 0.166.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-100693
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-100693
vendor-advisory
https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjw
third-party-advisory
https://www.vulncheck.com/advisories/hugo-0.162.0-before-0.166.0-ip-literal-deny-rule-bypass
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