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CVE-2026-42599 Cross-site scripting via spread attributes in Svelte SSR

🗓️ 09 Jun 2026 16:22:46Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 26 Views

Svelte before 5.55.7 exposes event handlers in spread attributes from untrusted data, enabling cross site scripting during hydration.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
CNNVD
Svelte 跨站脚本漏洞
9 Jun 202600:00
cnnvd
CVE
CVE-2026-42599
9 Jun 202616:22
cve
EUVD
EUVD-2026-35703
9 Jun 202616:22
euvd
Github Security Blog
Svelte SSR vulnerable to cross-site scripting via spread attributes
14 May 202620:19
github
NVD
CVE-2026-42599
9 Jun 202617:17
nvd
OSV
GHSA-PR6F-5X2Q-RWFP Svelte SSR vulnerable to cross-site scripting via spread attributes
14 May 202620:19
osv
Patchstack
NPM: Svelte SSR vulnerable to cross-site scripting via spread attributes
14 May 202620:19
patchstack
Positive Technologies
PT-2026-47875
9 Jun 202600:00
ptsecurity
RedhatCVE
CVE-2026-42599
10 Jun 202615:01
redhatcve
Snyk
Cross-site Scripting (XSS)
14 May 202620:19
snyk
Rows per page
[
  {
    "vendor": "sveltejs",
    "product": "svelte",
    "versions": [
      {
        "version": "< 5.55.7",
        "status": "affected"
      }
    ]
  }
]

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