CVE-2026-100693

EUVD-2026-87666
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.4 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 3.29%
Affected Products (NVD)
VendorProductVersion
gohugohugo
0.162.0 ≤
𝑥
< 0.166.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
hugo
bookworm
0.111.3-1
fixed
forky
0.167.0-7
fixed
sid
0.169.0-2
fixed
trixie
0.131.0-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
hugo
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
xenial
needs-triage
Common Weakness Enumeration
References
https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjw
https://www.vulncheck.com/advisories/hugo-0.162.0-before-0.166.0-ip-literal-deny-rule-bypass