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CVE-2026-41321

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

Published: Apr 24, 2026Updated: Apr 27, 2026 Sources: CVE List NVDCWE-918
2.2LOW
NVD MITRE
EPSS Score
0.2%
Top 90.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-918

Affected Products

withastro
oss-projectaka astro, @astrojs/cloudflare
@astrojs/cloudflareLibrary
OSS Libraries / web-framework

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Command and Control
Initial Access
View detailed technique mapping

References

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