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CVE-2026-54298 Astro: XSS via Unescaped Attribute Names in Spread Props

🗓️ 22 Jun 2026 17:33:15Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

Astro prior to 6.4.6 has a vulnerability where spread attributes use unescaped keys, enabling cross site scripting via untrusted names.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-54298
22 Jun 202617:33
attackerkb
Circl
CVE-2026-54298
12 Jun 202616:48
circl
CVE
CVE-2026-54298
22 Jun 202617:33
cve
EUVD
EUVD-2026-38336
22 Jun 202617:33
euvd
Github Security Blog
Astro: XSS via Unescaped Attribute Names in Spread Props
16 Jun 202614:57
github
NVD
CVE-2026-54298
22 Jun 202619:17
nvd
OSV
GHSA-JRPJ-WCV7-9FH9 Astro: XSS via Unescaped Attribute Names in Spread Props
16 Jun 202614:57
osv
Patchstack
NPM: Astro: XSS via Unescaped Attribute Names in Spread Props
16 Jun 202614:57
patchstack
Positive Technologies
PT-2026-49739
16 Jun 202600:00
ptsecurity
Snyk
Cross-site Scripting (XSS)
16 Jun 202614:57
snyk
Rows per page
[
  {
    "vendor": "withastro",
    "product": "astro",
    "versions": [
      {
        "version": "< 6.4.6",
        "status": "affected"
      }
    ]
  }
]

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