CVE-2026-40316

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 74% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

OWASP BLT is a QA testing and vulnerability disclosure platform that encompasses websites, apps, git repositories, and more. Versions prior to 2.1.1 contain an RCE vulnerability in the .github/workflows/regenerate-migrations.yml workflow. The workflow uses the pull_request_target trigger to run with full GITHUB_TOKEN write permissions, copies attacker-controlled files from untrusted pull requests into the trusted runner workspace via git show, and then executes python manage.py makemigrations, which imports Django model modules including attacker-controlled website/models.py at runtime. Any module-level Python code in the attacker's models.py is executed during import, enabling arbitrary code execution in the privileged CI environment with access to GITHUB_TOKEN and repository secrets. The attack is triggerable by any external contributor who can open a pull request, provided a maintainer applies the regenerate-migrations label, potentially leading to secret exfiltration, repository compromise, and supply chain attacks. A patch for this issue is expected to be released in version 2.1.1.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
33.3%
KEV
Not listed

Published

April 15, 2026

Last Modified

May 21, 2026

Advisory Details (1)

Auto-updated May 22, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

RCE in Github Actions via untrusted Django model execution in workflow · Advisory · OWASP-BLT/BLT · GitHub

https://github.com/OWASP-BLT/BLT/security/advisories/GHSA-wxm3-64fx-cmx9

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 37× 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. 2026-07-16 17:03 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
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  1. 2026-06-25 13:49 UTCEPSS rescore
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  3. 2026-06-23 21:33 UTCEPSS rescore
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  6. 2026-06-21 14:56 UTCEPSS rescore
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  15. 2026-06-14 20:39 UTCEG score recompute
  16. 2026-06-13 23:00 UTCEPSS rescore
  17. 2026-06-12 23:12 UTCEPSS rescore
  18. 2026-06-12 23:12 UTCEPSS rescore
  19. 2026-06-12 07:51 UTCEG score recompute
  20. 2026-06-11 18:58 UTCEG score recompute
  21. 2026-06-11 14:00 UTCEPSS rescore
  22. 2026-06-10 22:18 UTCEPSS rescore
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  25. 2026-06-10 13:05 UTCEG score recompute
  26. 2026-06-10 00:24 UTCEG score recompute
  27. 2026-06-09 10:10 UTCEG score recompute
  28. 2026-06-08 14:17 UTCEPSS rescore
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  30. 2026-06-08 06:28 UTCEG score recompute
  31. 2026-06-07 17:47 UTCEG score recompute
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  35. 2026-06-06 13:47 UTCEPSS rescore
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  38. 2026-06-05 06:10 UTCEPSS rescore
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  40. 2026-06-04 13:12 UTCEPSS rescore
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  42. 2026-06-03 18:52 UTCEG score recompute
  43. 2026-06-02 20:13 UTCEPSS rescore
  44. 2026-06-02 14:24 UTCEG score recompute
  45. 2026-06-01 18:28 UTCEG score recompute
  46. 2026-06-01 13:52 UTCEPSS rescore
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  49. 2026-05-31 22:30 UTCEPSS rescore
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  60. 2026-05-26 07:18 UTCEPSS rescore
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  62. 2026-05-23 00:08 UTCEG score recompute
  63. 2026-05-20 22:38 UTCEPSS rescore
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  65. 2026-05-20 17:03 UTCEG score recompute
  66. 2026-05-20 11:22 UTCEPSS rescore
  67. 2026-05-20 11:22 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-40316?
CVE-2026-40316 is a high vulnerability published on April 15, 2026. OWASP BLT is a QA testing and vulnerability disclosure platform that encompasses websites, apps, git repositories, and more. Versions prior to 2.1.1 contain an RCE vulnerability in the .github/workflows/regenerate-migrations.yml workflow. The workflow uses the pullrequesttarget trigger to run with…
When was CVE-2026-40316 disclosed?
CVE-2026-40316 was first published in the National Vulnerability Database on April 15, 2026, with the most recent update on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40316 actively exploited?
CVE-2026-40316 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-40316?
CVE-2026-40316 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-40316?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40316, 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.

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