CVE-2026-72538

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-11. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

An argument injection vulnerability in PrefectHQ Prefect through 3.8.2 allows authenticated users to achieve remote code execution via the git_clone pull step branch field. The branch parameter is passed directly to git pull without sanitization, enabling injection of arbitrary git arguments. This represents a distinct code path from the incomplete fix applied for CVE-2026-5366 and allows command execution on the Prefect server.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

August 11, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Aug 11, 2026
No patch confirmed yet.
generic

GitHub - PrefectHQ/prefect: Prefect is a workflow orchestration framework for building resilient data pipelines in Python. · GitHub

https://github.com/PrefectHQ/prefect

Vendor Advisories for CVE-2026-72538(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 21× in last 7d / 101× 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 142 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-72538?
CVE-2026-72538 is a high vulnerability published on August 11, 2026. An argument injection vulnerability in PrefectHQ Prefect through 3.8.2 allows authenticated users to achieve remote code execution via the git_clone pull step branch field. The branch parameter is passed directly to git pull without sanitization, enabling injection of arbitrary git arguments. This…
When was CVE-2026-72538 disclosed?
CVE-2026-72538 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72538 actively exploited?
CVE-2026-72538 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 48.6% of all scored CVEs.
What is the CVSS score of CVE-2026-72538?
CVE-2026-72538 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-72538?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72538, 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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