CVE-2026-41321 | THREATINT

Description

@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' behavior. This allows the Cloudflare Worker to follow HTTP redirects to arbitrary URLs, bypassing the isRemoteAllowed() domain allowlist check which only validates the initial URL. This vulnerabiity is caused by an incomplete fix for CVE-2025-58179. This vulnerability is fixed in 13.1.10.

PUBLISHED Reserved 2026-04-20 | Published 2026-04-24 | Updated 2026-04-24 | Assigner GitHub_M

LOW: 2.2CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L

Problem types

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

Product status

< 13.1.10

affected

References

github.com/.../astro/security/advisories/GHSA-88gm-j2wx-58h6 exploit

github.com/.../astro/security/advisories/GHSA-88gm-j2wx-58h6

cve.org (CVE-2026-41321)

nvd.nist.gov (CVE-2026-41321)

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