CVE-2026-42573: falha de média gravidade em sveltejs svelte
Svelte: XSS via DOM Clobbering of Internal Framework State
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13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.3epss 0.3%
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:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N
Produtos afetados
sveltejs · svelteCVEs relacionadas — sveltejs svelte
No mesmo produto, das mais perigosas para as menos.
CVE-2026-42567MEDIUMSvelte: ReDoS in `<svelte:element>` Tag ValidationEPSS 0.5%CVE-2026-27125MEDIUMSvelte SSR attribute spreading includes inherited properties from prototype chainEPSS 0.4%CVE-2024-45047MEDIUMPotential mXSS vulnerability due to improper HTML escaping in svelteEPSS 0.4%CVE-2026-27902MEDIUMSvelte Vulnerable to XSS via HTML Comment Injection in SSR Error Boundary Hydration MarkersEPSS 0.3%CVE-2026-27901MEDIUMSvelte vulnerable to XSS during SSR with contenteditable `bind:innerText` and `bind:textContent`EPSS 0.3%CVE-2026-27122MEDIUMSvelte SSR does not validate dynamic element tag names in `<svelte:element>`EPSS 0.2%
Referências
https://access.redhat.com/security/cve/CVE-2026-42573https://bugzilla.redhat.com/show_bug.cgi?id=2487093https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.7https://github.com/sveltejs/svelte/security/advisories/GHSA-rcqx-6q8c-2c42https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42573.json