CVE-2026-75926

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-18. a secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.6Exploit: None knownExposed: 0

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

Hugo 0.161.0 placed the Node asset pipelines behind the Node.js permission model so that code running through PostCSS, Babel, or TailwindCSS could not reach the file system outside the project directory. Hugo 0.162.0 added tailwindcss to the AllowChildProcess default in config/security/securityConfig.go, which makes nodePermissionArgs in common/hexec/exec.go append --allow-child-process whenever the tool being launched is named tailwindcss. TailwindCSS loads the site's tailwind.config.js through require at startup, so top-level code in that file executes inside the permitted Node process and can call child_process to spawn a shell. The spawned process is not a Node process and inherits none of the permission flags, so it runs with the full privileges of the account performing the build. Building a site whose theme, module, or starter template supplies the Tailwind configuration therefore yields arbitrary command execution rather than the confined file access the permission model was introduced to enforce. Hugo 0.165.0 removes tailwindcss from the default security.exec.allow list, so the tool is no longer launched under the default configuration.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity86% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 20, 2026

Advisory Details (6)

Auto-updated Aug 18, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github.
generic

Hugo 0.162.0 to 0.164.x - Node Permission Model Bypass via Default TailwindCSS Child-Process Grant | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hugo-to-x-node-permission-model-bypass-via-default-tailwindcss-child-process-grant
generic

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

https://github.com/gohugoio/hugo
generic

hugo/common/hexec/exec.go at v0.164.0 · gohugoio/hugo · GitHub

https://github.com/gohugoio/hugo/blob/v0.164.0/common/hexec/exec.go#L292-L295
github

hugo/config/security/securityConfig.go at v0.164.0 · gohugoio/hugo · GitHub

https://github.com/gohugoio/hugo/blob/v0.164.0/config/security/securityConfig.go#L72-L79
generic

Remove tailwindcss from the default security.exec.allow list · Issue #15178 · gohugoio/hugo · GitHub

https://github.com/gohugoio/hugo/issues/15178
github_commit

commit 8a55df7af2e6 (gohugoio/hugo)

Fix landed in gohugoio/hugo commit 8a55df7af2e6 — awaiting tagged release

https://github.com/gohugoio/hugo/commit/8a55df7af2e6da31297245cc54fa2e3b521d93e8

Vendor Advisories for CVE-2026-75926(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
hugo0.131.0-1 ... 0.162.1-7 (43 versions)0.165.0-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 25× in last 7d / 115× 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.

Showing the most recent 100 of 131 total refreshes for this CVE.

  1. 2026-09-19 10:54 UTCGHSA enrichment
  2. 2026-09-18 21:51 UTCEG score recompute
  3. 2026-09-18 21:51 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 08:57 UTCGHSA enrichment
  6. 2026-09-17 21:51 UTCEG score recompute
  7. 2026-09-17 21:51 UTCGHSA enrichment
  8. 2026-09-17 09:04 UTCGHSA enrichment
  9. 2026-09-16 21:57 UTCEG score recompute
  10. 2026-09-16 21:57 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 06:14 UTCEG score recompute
  13. 2026-09-16 06:14 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 19:09 UTCGHSA enrichment
  16. 2026-09-15 06:50 UTCEG score recompute
  17. 2026-09-15 06:50 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 19:44 UTCGHSA enrichment
  20. 2026-09-14 07:53 UTCGHSA enrichment
  21. 2026-09-13 20:48 UTCEG score recompute
  22. 2026-09-13 20:48 UTCGHSA enrichment
  23. 2026-09-13 09:42 UTCGHSA enrichment
  24. 2026-09-12 22:36 UTCEG score recompute
  25. 2026-09-12 22:36 UTCGHSA enrichment
Show 75 more
  1. 2026-09-12 15:02 UTCEPSS rescore
  2. 2026-09-12 11:30 UTCGHSA enrichment
  3. 2026-09-12 00:20 UTCEG score recompute
  4. 2026-09-12 00:20 UTCGHSA enrichment
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-11 13:14 UTCEG score recompute
  7. 2026-09-11 13:14 UTCGHSA enrichment
  8. 2026-09-11 00:39 UTCGHSA enrichment
  9. 2026-09-10 13:24 UTCEG score recompute
  10. 2026-09-10 13:24 UTCGHSA enrichment
  11. 2026-09-10 09:35 UTCEPSS rescore
  12. 2026-09-10 02:18 UTCGHSA enrichment
  13. 2026-09-09 15:12 UTCGHSA enrichment
  14. 2026-09-09 03:26 UTCEG score recompute
  15. 2026-09-09 03:26 UTCGHSA enrichment
  16. 2026-09-08 22:01 UTCEPSS rescore
  17. 2026-09-08 03:14 UTCGHSA enrichment
  18. 2026-09-07 16:08 UTCEG score recompute
  19. 2026-09-07 16:08 UTCGHSA enrichment
  20. 2026-09-07 04:36 UTCGHSA enrichment
  21. 2026-09-06 15:26 UTCEG score recompute
  22. 2026-09-06 15:26 UTCGHSA enrichment
  23. 2026-09-06 13:48 UTCEPSS rescore
  24. 2026-09-06 04:20 UTCGHSA enrichment
  25. 2026-09-05 17:14 UTCEG score recompute
  26. 2026-09-05 17:14 UTCGHSA enrichment
  27. 2026-09-05 06:07 UTCGHSA enrichment
  28. 2026-09-04 19:01 UTCEG score recompute
  29. 2026-09-04 19:01 UTCGHSA enrichment
  30. 2026-09-04 07:48 UTCEG score recompute
  31. 2026-09-04 07:48 UTCGHSA enrichment
  32. 2026-09-04 05:07 UTCEPSS rescore
  33. 2026-09-03 20:14 UTCGHSA enrichment
  34. 2026-09-03 09:02 UTCGHSA enrichment
  35. 2026-09-02 21:57 UTCEG score recompute
  36. 2026-09-02 21:57 UTCGHSA enrichment
  37. 2026-09-02 14:12 UTCEPSS rescore
  38. 2026-09-02 07:54 UTCGHSA enrichment
  39. 2026-09-01 20:47 UTCEG score recompute
  40. 2026-09-01 20:47 UTCGHSA enrichment
  41. 2026-09-01 13:54 UTCEPSS rescore
  42. 2026-09-01 09:42 UTCEG score recompute
  43. 2026-09-01 09:41 UTCGHSA enrichment
  44. 2026-09-01 04:40 UTCEPSS rescore
  45. 2026-09-01 04:40 UTCEPSS rescore
  46. 2026-08-31 22:35 UTCGHSA enrichment
  47. 2026-08-31 11:29 UTCGHSA enrichment
  48. 2026-08-31 00:20 UTCEG score recompute
  49. 2026-08-31 00:20 UTCGHSA enrichment
  50. 2026-08-30 19:18 UTCEPSS rescore
  51. 2026-08-30 19:17 UTCEPSS rescore
  52. 2026-08-30 13:15 UTCGHSA enrichment
  53. 2026-08-30 02:09 UTCEG score recompute
  54. 2026-08-30 02:09 UTCGHSA enrichment
  55. 2026-08-30 01:22 UTCEPSS rescore
  56. 2026-08-29 15:03 UTCGHSA enrichment
  57. 2026-08-29 03:58 UTCEG score recompute
  58. 2026-08-29 03:58 UTCGHSA enrichment
  59. 2026-08-28 21:42 UTCEPSS rescore
  60. 2026-08-28 12:59 UTCGHSA enrichment
  61. 2026-08-28 01:47 UTCGHSA enrichment
  62. 2026-08-27 14:41 UTCEG score recompute
  63. 2026-08-27 14:41 UTCGHSA enrichment
  64. 2026-08-27 14:25 UTCEPSS rescore
  65. 2026-08-27 03:32 UTCGHSA enrichment
  66. 2026-08-26 16:25 UTCEG score recompute
  67. 2026-08-26 16:25 UTCGHSA enrichment
  68. 2026-08-26 14:47 UTCEPSS rescore
  69. 2026-08-26 04:57 UTCGHSA enrichment
  70. 2026-08-25 17:51 UTCEG score recompute
  71. 2026-08-25 17:51 UTCGHSA enrichment
  72. 2026-08-25 13:49 UTCEPSS rescore
  73. 2026-08-25 06:46 UTCGHSA enrichment
  74. 2026-08-24 19:39 UTCEG score recompute
  75. 2026-08-24 19:39 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-75926?
CVE-2026-75926 is a high vulnerability published on August 18, 2026. Hugo 0.161.0 placed the Node asset pipelines behind the Node.js permission model so that code running through PostCSS, Babel, or TailwindCSS could not reach the file system outside the project directory. Hugo 0.162.0 added tailwindcss to the AllowChildProcess default in…
When was CVE-2026-75926 disclosed?
CVE-2026-75926 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75926 actively exploited?
CVE-2026-75926 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 95.9% of all scored CVEs.
What is the CVSS score of CVE-2026-75926?
CVE-2026-75926 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-75926?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75926, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-75926

Explore →

Is Your Infrastructure Affected by CVE-2026-75926?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs