Improper Handling of Case Sensitivity Affecting hugo package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.14% (3rd percentile)

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  • Snyk IDSNYK-ECHOLATEST-HUGO-20158708
  • published27 Sept 2026
  • disclosed26 Sept 2026

Introduced: 26 Sep 2026

NewCVE-2026-100693  (opens in a new tab)
CWE-178  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest hugo.

NVD Description

Note: Versions mentioned in the description apply only to the upstream hugo package and not the hugo package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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 Base Scores

version 3.1