CVE-2026-10582

HIGHPre-NVD 7.47.4—
EchelonGraph scoreHIGH confidence

Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2026-08-24. a secondary CVSS source baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Hugo's security.http.urls allowlist is the only control on outbound fetches made by resources.GetRemote, and it inspects the URL text alone. CheckAllowedHTTPURL in config/security/securityConfig.go applies the configured pattern list and then re-checks a canonicalised form of an integer, hex or octal IPv4 host, but it never resolves the hostname and never inspects the address the HTTP client actually connects to. The client constructed in resources/resource_factories/create/create.go installs no dial-time hook, so no check occurs at connection time either. A hostname that resolves to a loopback, private or cloud-metadata address therefore satisfies the policy, and the response body is embedded in the generated site. An attacker who can supply a URL through content, for example a front-matter field or a CMS field, can make the build fetch an internal endpoint and publish the response in the static output, so the build artifact itself carries the data out.

CVSS v3
7.4
EG Score
7.4(high)
EG Risk
33(Track)
EG Risk 33/100SSVC: Track

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
Severity74% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

August 24, 2026

Last Modified

August 24, 2026

Advisory Details (4)

Auto-updated Aug 24, 2026
No patch confirmed yet. Sources: github.
generic

Hugo 0.91.0 through 0.165.0 Server-Side Request Forgery via security.http.urls Lacking Destination Address Validation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hugo-through-server-side-request-forgery-via-security-http-urls-lacking-destination-address-validation
generic

hugo/resources/resource_factories/create/create.go at v0.165.0 · gohugoio/hugo · GitHub

https://github.com/gohugoio/hugo/blob/v0.165.0/resources/resource_factories/create/create.go
github

hugo/config/security/securityConfig.go at v0.165.0 · gohugoio/hugo · GitHub

https://github.com/gohugoio/hugo/blob/v0.165.0/config/security/securityConfig.go
generic

GitHub - gohugoio/hugo: The world’s fastest framework for building websites. · GitHub

https://github.com/gohugoio/hugo

Vendor Advisories for CVE-2026-10582(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 23× 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. 2026-08-30 01:21 UTCEPSS rescore
  2. 2026-08-29 18:45 UTCGHSA enrichment
  3. 2026-08-29 05:36 UTCEG score recompute
  4. 2026-08-29 05:36 UTCGHSA enrichment
  5. 2026-08-28 21:40 UTCEPSS rescore
  6. 2026-08-28 16:27 UTCGHSA enrichment
  7. 2026-08-28 02:15 UTCEG score recompute
  8. 2026-08-28 02:15 UTCGHSA enrichment
  9. 2026-08-27 14:24 UTCEPSS rescore
  10. 2026-08-27 13:04 UTCGHSA enrichment
  11. 2026-08-26 23:55 UTCEG score recompute
  12. 2026-08-26 23:55 UTCGHSA enrichment
  13. 2026-08-26 10:47 UTCGHSA enrichment
  14. 2026-08-25 21:41 UTCEG score recompute
  15. 2026-08-25 21:41 UTCGHSA enrichment
  16. 2026-08-25 13:48 UTCEPSS rescore
  17. 2026-08-25 08:31 UTCGHSA enrichment
  18. 2026-08-24 19:25 UTCEG score recompute
  19. 2026-08-24 19:25 UTCGHSA enrichment
  20. 2026-08-24 19:07 UTCEG score recompute
  21. 2026-08-24 19:07 UTCGHSA enrichment
  22. 2026-08-24 10:42 UTCEG score recompute
  23. 2026-08-24 10:41 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-10582?
CVE-2026-10582 is a high vulnerability published on August 24, 2026. Hugo's security.http.urls allowlist is the only control on outbound fetches made by resources.GetRemote, and it inspects the URL text alone. CheckAllowedHTTPURL in config/security/securityConfig.go applies the configured pattern list and then re-checks a canonicalised form of an integer, hex or…
When was CVE-2026-10582 disclosed?
CVE-2026-10582 was first published in the National Vulnerability Database on August 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-10582 actively exploited?
CVE-2026-10582 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 76.2% of all scored CVEs.
What is the CVSS score of CVE-2026-10582?
CVE-2026-10582 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2026-10582?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-10582, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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