CVE-2026-41067

Astro is a web framework. Prior to 6.1.6, the defineScriptVars function in Astro's server-side rendering pipeline uses a case-sensitive regex /<\/script>/g to sanitize values injected into inline <script> tags via the define:vars directive. HTML parsers close <script> elements case-insensitively and also accept whitespace or / before the closing >, allowing an attacker to bypass the sanitization with payloads like </Script>, </script >, or </script/> and inject arbitrary HTML/JavaScript. This vulnerability is fixed in 6.1.6.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/withastro/astro/security/advisories/GHSA-j687-52p2-xcff	Exploit Mitigation Vendor Advisory
https://github.com/withastro/astro/security/advisories/GHSA-j687-52p2-xcff	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:astro:astro:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2026-04-24 17:16

Updated : 2026-06-17 10:46

NVD link : CVE-2026-41067

Mitre link : CVE-2026-41067

CVE.ORG link : CVE-2026-41067

JSON object : View

Products Affected

astro

astro

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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