CVE-2026-72538

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH 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(high)
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
50%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 11, 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 29× in last 7d / 43× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 20:49 UTCGHSA enrichment
  3. 2026-08-20 07:45 UTCGHSA enrichment
  4. 2026-08-19 18:42 UTCEG score recompute
  5. 2026-08-19 18:42 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 04:29 UTCGHSA enrichment
  8. 2026-08-18 15:17 UTCEG score recompute
  9. 2026-08-18 15:17 UTCGHSA enrichment
  10. 2026-08-18 13:49 UTCEPSS rescore
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 02:11 UTCEG score recompute
  13. 2026-08-18 02:11 UTCGHSA enrichment
  14. 2026-08-17 13:47 UTCEPSS rescore
  15. 2026-08-17 13:04 UTCGHSA enrichment
  16. 2026-08-17 00:01 UTCEG score recompute
  17. 2026-08-17 00:01 UTCGHSA enrichment
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 10:57 UTCEG score recompute
  21. 2026-08-16 10:57 UTCGHSA enrichment
  22. 2026-08-16 02:15 UTCEPSS rescore
  23. 2026-08-15 21:54 UTCGHSA enrichment
  24. 2026-08-15 08:50 UTCEG score recompute
  25. 2026-08-15 08:50 UTCGHSA enrichment
Show 18 more
  1. 2026-08-15 01:31 UTCEPSS rescore
  2. 2026-08-14 19:46 UTCGHSA enrichment
  3. 2026-08-14 06:43 UTCEG score recompute
  4. 2026-08-14 06:43 UTCGHSA enrichment
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-13 17:39 UTCGHSA enrichment
  7. 2026-08-13 04:36 UTCGHSA enrichment
  8. 2026-08-12 15:33 UTCEG score recompute
  9. 2026-08-12 15:32 UTCGHSA enrichment
  10. 2026-08-12 13:51 UTCEPSS rescore
  11. 2026-08-12 02:29 UTCGHSA enrichment
  12. 2026-08-11 13:25 UTCEG score recompute
  13. 2026-08-11 13:25 UTCGHSA enrichment
  14. 2026-08-11 12:57 UTCEG score recompute
  15. 2026-08-11 12:57 UTCGHSA enrichment
  16. 2026-08-11 12:26 UTCEG score recompute
  17. 2026-08-11 11:22 UTCEG score recompute
  18. 2026-08-11 11:22 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

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. 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 49.9% 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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