Unknown · Vowpal Wabbit · CVE-2026-44723
**Name of the Vulnerable Software and Affected Versions**
Vowpal Wabbit (affected versions not specified)
**Description**
The workflow `.github/workflows/python checks.yml` embeds the `github.event.pull request.title` variable directly inside double-quoted bash strings across four separate steps and jobs. This variable is passed as a CLI argument to the `run tests model gen and load.py` Python test script. Because the shell interprets the expanded string before invoking Python, an attacker can break out of the quotes to execute arbitrary commands on the runner. The `pull request` trigger is active for PRs targeting any branch without additional access gates.
**Recommendations**
Apply the fix provided in commit 998e390e80a7e8192d7849b7784bc113dbd190ad.