GitHub Advisoryadvisory · npm

GHSA-h7h7-mm68-gmrc Svelte affected by XSS in SSR `<option>` element

MEDIUM Published 2026-02-19 Modified 2026-02-23 Official page ↗
Aliases
CVE-2026-27119
Ecosystem
npm
Packages
svelte
Severity
Moderate
CVSS vector
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
Weaknesses
CWE-79
Reviewed
2026-02-19

Affected packages

• npm svelte: >= 5.39.3, < 5.51.5 → fixed in 5.51.5

Description

In certain circumstances, the server-side rendering output of an `` element does not properly escape its content, potentially allowing HTML injection in the SSR output. Client-side rendering is not affected.

Related

Alias · CVE (1)

  • CVE-2026-27119 svelte performance oriented web framework. vulnerability

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References