PT-2026-41134 · Red Hat+4 · Red Hat Build Of Podman Desktop+1

CVE-2026-42573 · Published 2026-05-14 · Updated 2026-06-09

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Svelte versions prior to 5.55.7

Description Svelte is a performance oriented web framework. The software is susceptible to DOM clobbering of its internal framework state on elements, which can potentially lead to Cross-Site Scripting (XSS) attacks. This occurs when attribute spreading is used on a form element and attribute spreading or dynamic values are used for the name attribute on an input or button element within that form, provided both are user-controllable.

Recommendations Update to version 5.55.7.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-42573

GHSA-RCQX-6Q8C-2C42

Affected Products

Red Hat Build Of Podman Desktop

Svelte

References · 10

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42573.json · Exploit
• https://github.com/sveltejs/svelte/security/advisories/GHSA-rcqx-6q8c-2c42 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-rcqx-6q8c-2c42 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-42573 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42573 · Security Note
• https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.7 · Note
• https://github.com/sveltejs/svelte · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2487093 · Note
• https://access.redhat.com/security/cve/CVE-2026-42573 · Note
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42573.json · Note