Vulnerability · Published Apr 24, 2026 · Assigned by GitHub_M
CVE-2026-41322@astrojs/node: Cache Poisoning due to incorrect error handling when if-match header is malformed
Medium 5.3
In plain English
A medium-severity security flaw in astro from withastro. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
@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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @astrojs/node | 10.0.5 | GHSA-c57f-mm3j-27q9 |
Affected products (as reported)
Weakness: CWE-525 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
- https://github.com/withastro/astro/security/advisories/GHSA-c57f-mm3j-27q9 x_refsource_CONFIRM