GHSA-hw6r-g8gj-2987 — //github.com/pytorch/pyto…
GHSA-hw6r-g8gj-2987 is a security vulnerability in https://github.com/pytorch/pytorch/.github/actions/filter-test-configs. No vendor fix is recorded yet; mitigation options are listed below.
Actions expression injection in `filter-test-configs` (`GHSL-2023-181`)
Real-World Exposure
https://github.com/pytorch/pytorch/.github/actions/filter-test-configsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects GitHub Actions packages — download data is not available via public APIs for these ecosystems.
Description
The pytorch/pytorch filter-test-configs workflow is vulnerable to an expression injection in Actions, allowing an attacker to potentially leak secrets and alter the repository using the workflow.
Details
The filter-test-configs workflow is using the raw github.event.workflow_run.head_branch value inside the filter step:
- name: Select all requested test configurations
shell: bash
env:
GITHUB_TOKEN: ${{ inputs.github-token }}
JOB_NAME: ${{ steps.get-job-name.outputs.job-name }}
id: filter
run: |
...
python3 "${GITHUB_ACTION_PATH}/../../scripts/filter_test_configs.py" \
...
--branch "${{ github.event.workflow_run.head_branch }}"
In the event of a repository using filter-test-configs in a pull_request_target-triggered workflow, an attacker could use a malicious branch name to gain command execution in the step and potentially leak secrets.
name: Example
on: pull_request_target
jobs:
example:
runs-on: ubuntu-latest
steps:
- name: Filter
uses: pytorch/pytorch/.github/actions/filter-test-configs@v2
Impact
This issue may lead to stealing workflow secrets.
Remediation
- Use an intermediate environment variable for potentially attacker-controlled values such as
github.event.workflow_run.head_branch:
- name: Select all requested test configurations
shell: bash
env:
GITHUB_TOKEN: ${{ inputs.github-token }}
JOB_NAME: ${{ steps.get-job-name.outputs.job-name }}
HEAD_BRANCH: ${{ github.event.workflow_run.head_branch }}
id: filter
run: |
...
python3 "${GITHUB_ACTION_PATH}/../../scripts/filter_test_configs.py" \
...
--branch "$HEAD_BRANCH"
Resources
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦GitHub Actions | https://github.com/pytorch/pytorch/.github/actions/filter-test-configs | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for https://github.com/pytorch/pytorch/.github/actions/filter-test-configs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of https://github.com/pytorch/pytorch/.github/actions/filter-test-configs has shipped for GHSA-hw6r-g8gj-2987 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-hw6r-g8gj-2987 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-hw6r-g8gj-2987. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-hw6r-g8gj-2987 in your dependencies?
O3 Security finds GHSA-hw6r-g8gj-2987 across GitHub Actions dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.