CVE-2026-41067: Astro is a web framework

Routine

MEDIUM 6.1UPGRADE

CVE-2026-41067 is a medium-severity flaw (CVSS 6.1) affecting astro. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 </scri

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-04-24
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: astro

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-24 17:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

astro astro UPGRADE

Affected: < 6.1.6

Fixed in: 6.1.6

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls astro

2. UPGRADE to 6.1.6

npm install astro@">=6.1.6"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-41067?

astro: upgrade to 6.1.6. Exact commands for each OS are on this page.

Is CVE-2026-41067 being exploited?

CVE-2026-41067 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-41067 affect?

CVE-2026-41067 affects astro. Severity is medium (CVSS 6.1). 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.

How urgent is CVE-2026-41067?

Priority 28/100. Public exploit reference

Related CVEs

CVE-2026-45028 MEDIUM 6.1 UPGRADE Astro is a web framework
CVE-2026-54299 HIGH 7.5 UPGRADE Astro is a web framework
CVE-2026-50146 HIGH 7.1 UPGRADE Astro is a web framework
CVE-2026-54298 MEDIUM 4.2 UPGRADE Astro is a web framework

References

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