CVE-2026-41322: CWE-525: Use of Web Browser Cache Containing Sensitive Information in withastro astro
CVE-2026-41322 affects withastro's astro framework versions prior to 10. 0. 5. When requesting static JavaScript or CSS resources from the _astro path with an incorrect or malformed if-match header, the server may respond with a 500 error that is cached for one year instead of the expected 412 response. This causes subsequent requests to the resource to receive the cached 5xx error until the cache expires. The issue was fixed in version 10. 0. 5.
AI Analysis
Technical Summary
@astrojs/node, used to deploy Astro SSR sites to Node targets, had a vulnerability where malformed if-match headers on static resource requests caused a 500 error response with an excessively long cache lifetime. This caching behavior meant that clients would continue to receive the error response for up to one year, disrupting access to those static resources. The problem was resolved in astro version 10.0.5.
Potential Impact
The vulnerability results in a denial of service for static JavaScript and CSS resources by causing clients to cache a 5xx error response for an extended period. This can disrupt site functionality dependent on these resources until the cache expires or is cleared. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Upgrade to astro version 10.0.5 or later, where this issue is fixed. There is no official patch advisory beyond this version update. Until upgraded, clients may experience prolonged 5xx errors for static resources due to caching.
CVE-2026-41322: CWE-525: Use of Web Browser Cache Containing Sensitive Information in withastro astro
Description
CVE-2026-41322 affects withastro's astro framework versions prior to 10. 0. 5. When requesting static JavaScript or CSS resources from the _astro path with an incorrect or malformed if-match header, the server may respond with a 500 error that is cached for one year instead of the expected 412 response. This causes subsequent requests to the resource to receive the cached 5xx error until the cache expires. The issue was fixed in version 10. 0. 5.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
@astrojs/node, used to deploy Astro SSR sites to Node targets, had a vulnerability where malformed if-match headers on static resource requests caused a 500 error response with an excessively long cache lifetime. This caching behavior meant that clients would continue to receive the error response for up to one year, disrupting access to those static resources. The problem was resolved in astro version 10.0.5.
Potential Impact
The vulnerability results in a denial of service for static JavaScript and CSS resources by causing clients to cache a 5xx error response for an extended period. This can disrupt site functionality dependent on these resources until the cache expires or is cleared. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Upgrade to astro version 10.0.5 or later, where this issue is fixed. There is no official patch advisory beyond this version update. Until upgraded, clients may experience prolonged 5xx errors for static resources due to caching.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-20T14:01:46.671Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69ebaa0487115cfb685ef427
Added to database: 4/24/2026, 5:36:04 PM
Last enriched: 4/24/2026, 5:51:08 PM
Last updated: 4/24/2026, 8:05:44 PM
Views: 6
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