CVE-2026-27119mediumCWE-79

CVE-2026-27119: medium-severity vulnerability in sveltejs svelte

Svelte affected by XSS in SSR `<option>` element

Published · Updated

Follow this CVE+ Monitor svelte+ Monitor svelte

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.1epss 0.2%
svelte performance oriented web framework. From 5.39.3, <=5.51.4, in certain circumstances, the server-side rendering output of an <option> element does not properly escape its content, potentially allowing HTML injection in the SSR output. Client-side rendering is not affected. This vulnerability is fixed in 5.51.5.
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N
Affected products
sveltejs · svelte
Related CVEs — sveltejs svelte

In the same product, most dangerous first.

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-2026-42573MEDIUMSvelte: XSS via DOM Clobbering of Internal Framework StateEPSS 0.3%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%