CVE-2025-65019

MEDIUM EPSS 12.2%
Published Nov 19, 20257mo ago · Modified Jun 17, 20262w ago
6.1 CVSS 3.1
Medium
Find Similar
Published Nov 19, 2025 7mo ago
Last Modified Jun 17, 2026 2w ago

Description

Astro is a web framework. Prior to version 5.15.9, when using Astro's Cloudflare adapter (@astrojs/cloudflare) with output: 'server', the image optimization endpoint (/_image) contains a critical vulnerability in the isRemoteAllowed() function that unconditionally allows data: protocol URLs. This enables Cross-Site Scripting (XSS) attacks through malicious SVG payloads, bypassing domain restrictions and Content Security Policy protections. This issue has been patched in version 5.15.9.

CVSS Details

Base Score
6.1
Exploitability
2.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
12.2% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
astroastro* <5.15.9

References 2

  • github.com https://github.com/withastro/astro/commit/9e9c528191b6f5e06db9daf6ad26b8f68016e533
    Patch
  • github.com https://github.com/withastro/astro/security/advisories/GHSA-fvmw-cj7j-j39q
    ExploitThird Party Advisory

Remediation

  • github.com https://github.com/withastro/astro/commit/9e9c528191b6f5e06db9daf6ad26b8f68016e533
    Patch