CVE-2026-45028: Astro is a web framework

Routine

MEDIUM 6.1UPGRADE

CVE-2026-45028 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. Astro versions prior to 6.1.10 used AES-GCM encryption to protect the confidentiality and integrity of server island props and slots parameters, but did not bind the ciphertext to its intended component or parameter type. An attacker could replay one component's encrypted props (p) value as another component's slots (s) value, or vice versa. Since slots contain raw unescaped HTML while props may contain user-controlled v

Why this priority

No elevated risk signals yet

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	0.1% (top 96%)
CISA exploited list	No
Weakness	CWE-323, CWE-79
Published	2026-05-13
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

2026-05-13 16:17 UTCPublished CVE record published
2026-10-26 17:10 UTCUpdated Record last modified

astro astro UPGRADE

Affected: < 6.1.10

Fixed in: 6.1.10

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls astro

2. UPGRADE to 6.1.10

npm install astro@">=6.1.10"

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-2026-45028?

astro: upgrade to 6.1.10. Exact commands for each OS are on this page.

Is CVE-2026-45028 being exploited?

CVE-2026-45028 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-2026-45028 affect?

CVE-2026-45028 affects astro. Severity is medium (CVSS 6.1). Astro is a web framework. Astro versions prior to 6.1.10 used AES-GCM encryption to protect the confidentiality and integrity of server island props and slots parameters, but did not bind the ciphertext to its intended component or paramete

How urgent is CVE-2026-45028?

Priority 22/100. No elevated risk signals yet.

Related CVEs

CVE-2026-41067 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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