PostCSS 8.4 End of Life Date
PostCSS 8.4 end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
PostCSS 8.4 was released on November 24, 2021 and has no published end-of-life date yet. Its most recent patch is 8.4.49, published November 11, 2024.
What does PostCSS 8.4 end of life mean?
When PostCSS 8.4 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running PostCSS 8.4 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to PostCSS 8.5 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.