What is CVE-2026-41321?

CVE-2026-41321 is a low-severity vulnerability in Withastro @Astrojs/cloudflare, classified under Server-Side Request Forgery (SSRF). CVSS score: 2.2/10. Published 2026-04-24.

How severe is CVE-2026-41321?

Low severity. CVSS v3 base score is 2.2 out of 10.

SSRF in Withastro @Astrojs/cloudflare

CVE-2026-41321

@astrojs/cloudflare is an SSR adapter for use with Cloudflare Workers targets. Prior to 13.1.10, the fetch() call for remote images in packages/integrations/cloudflare/src/utils/image-binding-transform.ts uses the default redirect: 'follow…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.000 (14.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.2 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L.

Affected products

Withastro @Astrojs/cloudflare — versions < 13.1.10

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

https://github.com/withastro/astro/security/advisories/GHSA-88gm-j2wx-58h6 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-41321?: CVE-2026-41321 is a low-severity vulnerability in Withastro @Astrojs/cloudflare, classified under Server-Side Request Forgery (SSRF). CVSS score: 2.2/10. Published 2026-04-24.
How severe is CVE-2026-41321?: Low severity. CVSS v3 base score is 2.2 out of 10.