CVE-2026-41321

@astrojs/cloudflare: SSRF via redirect following in Cloudflare image-binding-transform endpoint

State: Published
Severity: 2.2 Low
Published: Apr 24, 2026
Updated: Apr 24, 2026
Reserved: Apr 20, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	2.2 Low	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L	GitHub_M

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
@astrojs/cloudflarewithastro	< 13.1.10Affected

References

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

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