An issue was discovered in PostCSS before 8.4.31. The vulnerability affects linters using PostCSS to parse external untrusted CSS. An attacker can prepare CSS in such a way that it will contains parts parsed by PostCSS as a CSS comment. After processing by PostCSS, it will be included in the PostCSS output in CSS nodes (rules, properties) despite being included in a comment.
Red Hat Security Advisory 2024-10517-03 - Red Hat OpenShift Container Platform release 4.17.7 is now available with updates to packages and images that fix several bugs.