CVE-2026-40316 OWASP BLT has RCE in Github Actions via untrusted Django model execution in workflow
Attacker can execute arbitrary code in CI via malicious Django models in pull requests, leading to secret exfiltration and repository compromise.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-40316?
CVE-2026-40316 is a high-severity code injection vulnerability in OWASP-BLT BLT, published on 15 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Which versions are affected by CVE-2026-40316?
It affects 1 product.
Products include Owasp Owasp Blt.
How do I fix CVE-2026-40316?
No fix has been published for CVE-2026-40316 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-40316 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40316 exists.