CVE-2026-100693

HIGHPre-NVD 8.48.4—
EchelonGraph scoreHIGH confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-09-26. A secondary CVSS source baseline 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 8.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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 v3
8.4
EG Score
8.4HIGHhigh confidence
EG Risk
38
EG Risk 38/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity84% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 26, 2026

Last Modified

September 30, 2026

Advisory Details (2)

Auto-updated Sep 26, 2026
Patch available. Sources: github.
generic

Hugo v0.162.0 before v0.166.0 IP-literal Deny Rule Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hugo-0.162.0-before-0.166.0-ip-literal-deny-rule-bypass
github Patch Available

A mixed case URL would bypass the security.http.urls IP-literal deny rule · Advisory · gohugoio/hugo · GitHub

https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjw

Vendor Advisories for CVE-2026-100693(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhathugo-main-0.166.0-0.1.hum12026-09-09redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 43× in last 7d / 48× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 08:09 UTCVendor advisory
  2. 2026-10-04 08:09 UTCGHSA enrichment
  3. 2026-10-03 19:57 UTCEG score recompute
  4. 2026-10-03 19:57 UTCVendor advisory
  5. 2026-10-03 19:57 UTCGHSA enrichment
  6. 2026-10-03 14:25 UTCEPSS rescore
  7. 2026-10-03 07:45 UTCVendor advisory
  8. 2026-10-03 07:44 UTCGHSA enrichment
  9. 2026-10-02 19:30 UTCEG score recompute
  10. 2026-10-02 19:30 UTCVendor advisory
  11. 2026-10-02 19:30 UTCGHSA enrichment
  12. 2026-10-02 07:17 UTCEG score recompute
  13. 2026-10-02 07:17 UTCVendor advisory
  14. 2026-10-02 07:17 UTCGHSA enrichment
  15. 2026-10-01 19:49 UTCEPSS rescore
  16. 2026-10-01 19:06 UTCVendor advisory
  17. 2026-10-01 19:05 UTCGHSA enrichment
  18. 2026-10-01 06:53 UTCVendor advisory
  19. 2026-10-01 06:53 UTCGHSA enrichment
  20. 2026-09-30 18:41 UTCEG score recompute
  21. 2026-09-30 18:41 UTCVendor advisory
  22. 2026-09-30 18:41 UTCGHSA enrichment
  23. 2026-09-30 17:24 UTCEG score recompute
  24. 2026-09-30 17:24 UTCVendor advisory
  25. 2026-09-30 17:24 UTCGHSA enrichment
Show 23 more
  1. 2026-09-30 15:02 UTCEPSS rescore
  2. 2026-09-30 07:34 UTCVendor advisory
  3. 2026-09-30 07:34 UTCGHSA enrichment
  4. 2026-09-29 19:22 UTCVendor advisory
  5. 2026-09-29 19:22 UTCGHSA enrichment
  6. 2026-09-29 18:13 UTCEG score recompute
  7. 2026-09-29 18:13 UTCVendor advisory
  8. 2026-09-29 18:13 UTCGHSA enrichment
  9. 2026-09-29 15:20 UTCEPSS rescore
  10. 2026-09-29 05:10 UTCEG score recompute
  11. 2026-09-29 05:10 UTCGHSA enrichment
  12. 2026-09-28 16:58 UTCGHSA enrichment
  13. 2026-09-28 15:23 UTCEG score recompute
  14. 2026-09-28 15:23 UTCGHSA enrichment
  15. 2026-09-28 13:50 UTCEPSS rescore
  16. 2026-09-28 03:10 UTCGHSA enrichment
  17. 2026-09-27 14:57 UTCEG score recompute
  18. 2026-09-27 14:57 UTCGHSA enrichment
  19. 2026-09-27 02:42 UTCEG score recompute
  20. 2026-09-27 02:42 UTCGHSA enrichment
  21. 2026-09-26 14:30 UTCEG score recompute
  22. 2026-09-26 13:35 UTCEG score recompute
  23. 2026-09-26 13:30 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-100693?
CVE-2026-100693 is a high vulnerability published on September 26, 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…
When was CVE-2026-100693 disclosed?
CVE-2026-100693 was first published on September 26, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100693 actively exploited?
CVE-2026-100693 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100693?
CVE-2026-100693 has a CVSS base score of 8.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100693?
A fix for CVE-2026-100693 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100693 are linked in the Vendor Advisories panel on this page.

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