How to catch GitHub Actions workflow injections before attackers do

Security in GitHub repositories is critically important, particularly concerning GitHub Actions workflow injections, a prevalent vulnerability where attackers can execute malicious commands by exploiting untrusted inputs. To mitigate this risk, developers should adopt a proactive security mindset and utilize best practices such as minimizing the use of risky syntax like ${{}}, employing environment variables, and adhering to the principle of least privilege by limiting workflow permissions. Additionally, using triggers like pull_request instead of pull_request_target can reduce risk exposure, and maintaining vigilance across all repository branches is crucial since vulnerabilities can arise outside the main branch. GitHub's CodeQL tool offers automated security checks, including taint tracking, to help identify potential vulnerabilities, although it should be complemented by a continuous focus on secure coding practices. Addressing workflow injections is not only feasible but critical, and raising awareness along with utilizing tools like CodeQL can significantly reduce these vulnerabilities.