CVE-2026-42573

Description

Svelte Vulnerable to XSS via DOM Clobbering of Internal Framework State

Overview

State

—

Assigner (CNA)

—

CVSS severity

medium

CVSS score

6.1 / 10

CVSS vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Effective score

6.1 / 10 MEDIUM source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2026-42573

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2026-35701

Assigner

GitHub_M

Published

Jun 9, 2026, 4:21:29 PM

Updated

Jul 15, 2026, 12:57:09 AM

EUVD base score (CVSS 4.0)

5.3 / 10
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N

EUVD-reported EPSS

0.3200

Vendors

sveltejs

Products

svelte (< 5.55.7)

Aliases

GHSA-rcqx-6q8c-2c42

ENISA description: 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.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (2)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://nvd.nist.gov/vuln/detail/CVE-2026-42573 tenable:nvd.nist.gov
• https://www.cve.org/CVERecord?id=CVE-2026-42573 tenable:www.cve.org

• Security Updates - Red Hat Customer Portal
  web:access.redhat.com

  Learn about our open source products, services, and company. You are here

  2026-05-26 03:07 UTC
• Security Advisory Bulletin 064 | Ubiquiti Community
  web:community.ui.com

  Published: May 21, 2026 Updated: May 22, 2026 Version: 1.1 Revision: 1.1 Summary 1 of 5 A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection. Affected Products: UniFi OS Server (Version 5.0.6 and earlier) Mitigation : Update your UniFi OS Server to Version 5.0.8 or later ...

  2026-05-26 03:07 UTC
• Multiple Critical Vulnerabilities Patched in Next.js and React Server ...
  web:cyberpress.org

  For teams unable to patch right away, Vercel strongly advises blocking all incoming requests that contain the Next-Resume header at the edge layer as an immediate mitigation measure.

  2026-05-26 03:07 UTC
• Security Update Guide - Microsoft
  web:portal.msrc.microsoft.com

  The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

  2026-05-26 03:07 UTC
• Landing Page | ServiceNow Common Vulnerabilities & Exposures (CVE ...
  web:support.servicenow.com

  Overview The advisories below document publicly disclosed Common Vulnerabilities and Exposures ( CVEs ) in the Now Platform by ServiceNow. Because ServiceNow uses various methods to communicate vulnerability information, patches, and other fixes, customers should review family, security patch , and hotfix release notes, which are available at https://docs.servicenow.com, for a complete list of ...

  2026-05-26 03:07 UTC
• CVE-2026-42573: Svelte Vulnerable to XSS via DOM Clobbering of Internal ...
  web:vulert.com

  Learn about CVE-2026-42573 , a vulnerability in Svelte that allows XSS attacks via DOM clobbering. Update to version 5.55.7 to fix the issue.

  2026-05-26 03:07 UTC
• Microsoft February 2026 Patch Tuesday fixes 6 zero-days, 58 flaws
  web:www.bleepingcomputer.com

  Today is Microsoft's February 2026 Patch Tuesday with security updates for 58 flaws, including 6 actively exploited and three publicly disclosed zero-day vulnerabilities.

  2026-05-26 03:07 UTC
• Oracle Critical Patch Update Advisory - April 2026
  web:www.oracle.com

  This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

  2026-05-26 03:07 UTC
• I tested Windows 11 March 2026 Updates: Everything new ... - Windows Latest
  web:www.windowslatest.com

  Windows 11 March 2026 Patch Tuesday update adds Emoji 16.0, Sysmon, network speed test, reliability improvements, and security fixes.

  2026-05-26 03:07 UTC
• Patch Tuesday May 2026: Security Updates & CVE Analysis
  web:zecurit.com

  Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

  2026-05-26 03:07 UTC

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