CVE-2026-41322 MEDIUM

CVE-2026-41322: @astrojs/node: Cache Poisoning due to incorrect error handling when if-match header is malformed

Vendor Withastro
Product astro
Weakness CWE-525
Published April 24, 2026
Last update April 25, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

What the vulnerability does

01Description

@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.

Key dates

02Disclosure timeline

April 24, 2026 CVE published
April 25, 2026 Record updated