CVE-2025-58179: Astro Cloudflare adapter is vulnerable to Server-Side Request Forgery via /_image endpoint

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-09-05 · updated 2026-06-17
Weakness: CWE-918

Description

Astro is a web framework for content-driven websites. Versions 11.0.3 through 12.6.5 are vulnerable to SSRF when using Astro's Cloudflare adapter. When configured with output: 'server' while using the default imageService: 'compile', the generated image optimization endpoint doesn't check the URLs it receives, allowing content from unauthorized third-party domains to be served. a A bug in impacted versions of the @astrojs/cloudflare adapter for deployment on Cloudflare’s infrastructure, allows an attacker to bypass the third-party domain restrictions and serve any content from the vulnerable origin. This issue is fixed in version 12.6.6.

Affected products

Astro @Astrojs/Cloudflare: from 11.0.3 before 12.6.6 — fixed in 12.6.6

How to fix

Upgrade to a fixed version: Astro @Astrojs/Cloudflare 12.6.6. Check the vendor advisory for mitigations.

References

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