CVE-2026-41321

LOW

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

Title source: cna

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.

References (1)

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

Scores

CVSS v3 2.2

EPSS 0.0004

EPSS Percentile 13.0%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-918

Status published

Products (1)

withastro/@astrojs/cloudflare < 13.1.10

Published Apr 24, 2026

Tracked Since Apr 24, 2026