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Research1 in 10 popular npm releases needed a hotfix

critical vulnerability

Prefect has Git Flag Injection via commit_sha and directories Parameters Leading to Remote Code Execution (RCE)

Fix availableCritical · CVSS 9.9EPSS 1.0%

Published Jun 20, 2026 · updated Nov 3, 2026

What to do

  1. Upgrade to a fixed version: prefect 3.6.25.
  2. Redeploy and restart long-running processes so they load the fixed code.

Affected packages

PyPIprefect1,900,744 downloads/week

Vulnerable versions
>= 3.1.11, < 3.6.25
Fixed in
3.6.25

Check your project: pip show prefect

Sources

CWE-94 Improper Control of Generation of Code

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