CVE-2026-41321
@astrojs/cloudflare: SSRF via redirect following in Cloudflare image-binding-transform endpoint
CVSS Score
2.2
EPSS Score
0.0%
EPSS Percentile
0th
@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.
| CWE | CWE-918 |
| Vendor | withastro |
| Product | @astrojs/cloudflare |
| Published | Apr 24, 2026 |
| Last Updated | Apr 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
withastro / @astrojs/cloudflare
< 13.1.10