CVE-2022-35954 – Delimiter injection vulnerability in @actions/core exportVariable

https://notcve.org/view.php?id=CVE-2022-35954

13 Aug 2022 — The GitHub Actions ToolKit provides a set of packages to make creating actions easier. The `core.exportVariable` function uses a well known delimiter that attackers can use to break out of that specific variable and assign values to other arbitrary variables. Workflows that write untrusted values to the `GITHUB_ENV` file may cause the path or other environment variables to be modified without the intention of the workflow or action author. Users should upgrade to `@actions/core v1.9.1`. If you are unable to... • https://github.com/actions/toolkit/commit/4beda9cbc00ba6eefe387a937c21087ccb8ee9df • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') •