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High 8.4Published Sep 26, 2026

CVE-2026-100693Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass

Updated under an hour ago ()

Does this affect you?

It affects gohugoio hugo and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.14%, higher than 3% of scored CVEs.

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
8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-178
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
0.14% (percentile 3)
Assigned by
VulnCheck
NVD analysis
Analyzed
Record last updated
Sep 30, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
gohugoio hugo
gohugoio:hugo (from the name)
from 0.162.0 before 0.166.0; 0.166.0 not affected
CNA record
gohugo hugo
gohugo:hugo
from 0.162.0 before 0.166.0
NVD

References

  • vendor-advisory
  • third-party-advisory

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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