CVE-2026-53970

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-14. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

ZeroBrew version 0.3.1 and prior contains a missing integrity verification vulnerability in the Ruby compatibility shim that allows network attackers to execute arbitrary code by substituting malicious content at formula resource or URL-based patch URLs without checksum validation. Attackers can intercept or replace downloads for secondary resource and patch paths in shim.rb, injecting attacker-controlled build steps or source tree modifications that execute during source builds via 'zb install --build-from-source' without any integrity warning.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

August 14, 2026

Last Modified

August 18, 2026

Advisory Details (3)

Auto-updated Aug 14, 2026
Patch available. Sources: github_commit.
generic

ZeroBrew version 0.3.1 and prior Missing Checksum Verification RCE via shim.rb | Advisories | VulnCheck

https://www.vulncheck.com/advisories/zerobrew-version-and-prior-missing-checksum-verification-rce-via-shim-rb
github_commit Patch Available

commit 89a60b73c7ed (lucasgelfond/zerobrew)

Patch available: lucasgelfond/zerobrew v0.3.2 (contains commit 89a60b73c7ed)

https://github.com/lucasgelfond/zerobrew/commit/89a60b73c7edd6b662e2a085be3d981b6ebeb1aa
generic

GitHub - lucasgelfond/zerobrew: A 5-20x faster experimental Homebrew alternative · GitHub

https://github.com/lucasgelfond/zerobrew

Vendor Advisories for CVE-2026-53970(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 24× in last 7d / 100× 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 126 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53970?
CVE-2026-53970 is a high vulnerability published on August 14, 2026. ZeroBrew version 0.3.1 and prior contains a missing integrity verification vulnerability in the Ruby compatibility shim that allows network attackers to execute arbitrary code by substituting malicious content at formula resource or URL-based patch URLs without checksum validation. Attackers can…
When was CVE-2026-53970 disclosed?
CVE-2026-53970 was first published in the National Vulnerability Database on August 14, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53970 actively exploited?
CVE-2026-53970 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 93.2% of all scored CVEs.
What is the CVSS score of CVE-2026-53970?
CVE-2026-53970 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-53970?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53970, 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

Explore the affected products and dependency analysis for CVE-2026-53970

Explore →

Is Your Infrastructure Affected by CVE-2026-53970?

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

Start Free Scan →Browse All CVEs