CVE-2026-41322: Withastro Astro

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

@astrojs/node allows Astro to deploy your SSR site to Node targets. Prior to 10.0.5, requesting a static js/css resources from _astro path with an incorrect/malformed if-match header returns a 500 error with a one year cache lifetime instead of 412 in some cases. This has the effect that all subsequent requests to that file, regardless of if-match header will be served a 5xx error instead of the file until the cache expires. This vulnerability is fixed in 10.0.5.

Affected products

• Withastro Astro: before 10.0.5 (fixed in 10.0.5)

Published 2026-04-24. Last modified 2026-06-17.