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Medium 6.1Published Jun 9, 2026
CVE-2026-42573Svelte is a performance oriented web framework.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Svelte is a performance oriented web framework. Prior to version 5.55.7, Svelte was vulnerable to DOM clobbering of its internal framework state on elements, potentially leading to XSS attacks. This issue has been patched in version 5.55.7.
- CVSS
- 6.1 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jul 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
svelte svelte svelte:svelte | before 5.55.7 | NVD |
References
- https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.7product, release-notes
- https://github.com/sveltejs/svelte/security/advisories/GHSA-rcqx-6q8c-2c42vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-42573
- https://bugzilla.redhat.com/show_bug.cgi?id=2487093
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42573.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.