Prefect Git Argument Injection in GitRepository Pull StepsGHSA-6rcx-55r6-jx65
MEDIUMFix: PrefectHQ/prefect#21384GHSA-6rcx-55r6-jx65 is a medium-severity (CVSS 6.3) CWE-74 vulnerability in prefect. A fix is available for prefect — see the affected versions and patch details below.
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
Exploitation and automatability from CISA’s SSVC triage for GHSA-6rcx-55r6-jx65.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
prefectReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
A vulnerability was found in PrefectHQ prefect up to 3.6.25.dev6. Affected by this issue is some unknown functionality of the file src/prefect/runner/storage.py of the component GitRepository Pull Handler. The manipulation of the argument commit_sha/directories results in argument injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version 3.6.25.dev7 can resolve this issue. The patch is identified as 6a9d9918716ce4ee0297b69f3046f7067ef1faae. It is advisable to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | prefect | all versions | 3.6.25.dev7pip install --upgrade 'prefect==3.6.25.dev7' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for prefect, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update prefect to 3.6.25.dev7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6rcx-55r6-jx65 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Frequently Asked Questions
Is GHSA-6rcx-55r6-jx65 in your dependencies?
Find it across PyPI, including transitive dependencies.