CVE-2026-12537

HIGHNVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-24. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

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

Improper Neutralization used in an OS Command in the container launcher in Google Gemini CLI (versions prior to 0.39.1) and run-gemini-cli GitHub Action (versions prior to 0.1.22) on headless CI platforms allows an unprivileged attacker to achieve pre-sandbox host-level code execution a maliciously crafted .gemini/.env file.

CVSS v3
7.8
EG Score
7.8(high)
EPSS
3.2%
KEV
Not listed

Published

June 24, 2026

Last Modified

July 2, 2026

Advisory Details (1)

Auto-updated Jun 25, 2026
Patch available. Sources: github.
github Patch Available

Update to Gemini CLI and run-gemini-cli Trust Model · Advisory · google-github-actions/run-gemini-cli · GitHub

https://github.com/google-github-actions/run-gemini-cli/security/advisories/GHSA-wpqr-6v78-jr5g

Vendor Advisories for CVE-2026-12537(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 57× in last 7d / 126× 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. 2026-07-07 00:07 UTCEG score recompute
  2. 2026-07-07 00:07 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 11:38 UTCEG score recompute
  5. 2026-07-06 11:38 UTCGHSA enrichment
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 23:10 UTCEG score recompute
  8. 2026-07-05 23:10 UTCGHSA enrichment
  9. 2026-07-05 10:38 UTCEG score recompute
  10. 2026-07-05 10:38 UTCGHSA enrichment
  11. 2026-07-05 02:30 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 22:09 UTCEG score recompute
  14. 2026-07-04 22:09 UTCGHSA enrichment
  15. 2026-07-04 09:42 UTCEG score recompute
  16. 2026-07-04 09:41 UTCGHSA enrichment
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-03 21:13 UTCEG score recompute
  19. 2026-07-03 21:12 UTCGHSA enrichment
  20. 2026-07-03 08:44 UTCEG score recompute
  21. 2026-07-03 08:44 UTCGHSA enrichment
  22. 2026-07-02 20:16 UTCEG score recompute▼ 2.20
  23. 2026-07-02 20:16 UTCGHSA enrichment
  24. 2026-07-02 20:05 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  25. 2026-07-02 16:39 UTCEG score recompute
Show 75 more
  1. 2026-07-02 16:39 UTCGHSA enrichment
  2. 2026-07-02 13:01 UTCEG score recompute
  3. 2026-07-02 13:00 UTCGHSA enrichment
  4. 2026-07-02 09:21 UTCEG score recompute
  5. 2026-07-02 09:21 UTCGHSA enrichment
  6. 2026-07-02 05:43 UTCEG score recompute
  7. 2026-07-02 05:43 UTCGHSA enrichment
  8. 2026-07-02 02:05 UTCEG score recompute
  9. 2026-07-02 02:05 UTCGHSA enrichment
  10. 2026-07-01 22:26 UTCEG score recompute
  11. 2026-07-01 22:25 UTCGHSA enrichment
  12. 2026-07-01 18:47 UTCEG score recompute
  13. 2026-07-01 18:47 UTCGHSA enrichment
  14. 2026-07-01 15:09 UTCEG score recompute
  15. 2026-07-01 15:09 UTCGHSA enrichment
  16. 2026-07-01 15:06 UTCEPSS rescore
  17. 2026-07-01 15:06 UTCEPSS rescore
  18. 2026-07-01 11:30 UTCEG score recompute
  19. 2026-07-01 11:30 UTCGHSA enrichment
  20. 2026-07-01 07:50 UTCEG score recompute
  21. 2026-07-01 07:50 UTCGHSA enrichment
  22. 2026-07-01 04:12 UTCEG score recompute
  23. 2026-07-01 04:12 UTCGHSA enrichment
  24. 2026-07-01 00:33 UTCEG score recompute
  25. 2026-07-01 00:33 UTCGHSA enrichment
  26. 2026-06-30 23:22 UTCEPSS rescore
  27. 2026-06-30 20:54 UTCEG score recompute
  28. 2026-06-30 20:54 UTCGHSA enrichment
  29. 2026-06-30 17:16 UTCEG score recompute
  30. 2026-06-30 17:16 UTCGHSA enrichment
  31. 2026-06-30 13:27 UTCEG score recompute
  32. 2026-06-30 13:26 UTCGHSA enrichment
  33. 2026-06-30 09:45 UTCEG score recompute
  34. 2026-06-30 09:45 UTCGHSA enrichment
  35. 2026-06-30 06:07 UTCEG score recompute
  36. 2026-06-30 06:06 UTCGHSA enrichment
  37. 2026-06-30 02:28 UTCEG score recompute
  38. 2026-06-30 02:28 UTCGHSA enrichment
  39. 2026-06-29 22:50 UTCEG score recompute
  40. 2026-06-29 22:50 UTCGHSA enrichment
  41. 2026-06-29 19:12 UTCEG score recompute
  42. 2026-06-29 19:12 UTCGHSA enrichment
  43. 2026-06-29 15:34 UTCEG score recompute
  44. 2026-06-29 15:34 UTCGHSA enrichment
  45. 2026-06-29 14:06 UTCEPSS rescore
  46. 2026-06-29 11:56 UTCEG score recompute
  47. 2026-06-29 11:56 UTCGHSA enrichment
  48. 2026-06-29 08:18 UTCEG score recompute
  49. 2026-06-29 08:18 UTCGHSA enrichment
  50. 2026-06-29 04:40 UTCEG score recompute
  51. 2026-06-29 04:40 UTCGHSA enrichment
  52. 2026-06-29 01:02 UTCEG score recompute
  53. 2026-06-29 01:02 UTCGHSA enrichment
  54. 2026-06-28 21:24 UTCEG score recompute
  55. 2026-06-28 21:24 UTCGHSA enrichment
  56. 2026-06-28 17:46 UTCEG score recompute
  57. 2026-06-28 17:46 UTCGHSA enrichment
  58. 2026-06-28 14:07 UTCEPSS rescore
  59. 2026-06-28 14:05 UTCEG score recompute
  60. 2026-06-28 14:05 UTCGHSA enrichment
  61. 2026-06-28 10:27 UTCEG score recompute
  62. 2026-06-28 10:27 UTCGHSA enrichment
  63. 2026-06-28 06:49 UTCEG score recompute
  64. 2026-06-28 06:49 UTCGHSA enrichment
  65. 2026-06-28 04:56 UTCEPSS rescore
  66. 2026-06-28 04:56 UTCEPSS rescore
  67. 2026-06-28 03:10 UTCEG score recompute
  68. 2026-06-28 03:10 UTCGHSA enrichment
  69. 2026-06-27 23:32 UTCEG score recompute
  70. 2026-06-27 23:32 UTCGHSA enrichment
  71. 2026-06-27 19:54 UTCEG score recompute
  72. 2026-06-27 19:54 UTCGHSA enrichment
  73. 2026-06-27 16:16 UTCEG score recompute
  74. 2026-06-27 16:16 UTCGHSA enrichment
  75. 2026-06-27 12:37 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-12537?
CVE-2026-12537 is a high vulnerability published on June 24, 2026. Improper Neutralization used in an OS Command in the container launcher in Google Gemini CLI (versions prior to 0.39.1) and run-gemini-cli GitHub Action (versions prior to 0.1.22) on headless CI platforms allows an unprivileged attacker to achieve pre-sandbox host-level code execution a maliciously…
When was CVE-2026-12537 disclosed?
CVE-2026-12537 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12537 actively exploited?
CVE-2026-12537 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12537?
CVE-2026-12537 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-12537?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12537, 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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