CVE-2026-27119
Svelte affected by XSS in SSR `<option>` element
EPSS 0.01%
Description
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.
How to fix CVE-2026-27119
To remediate CVE-2026-27119, upgrade the affected package to a fixed version below.
- npm/svelte—upgrade to 5.51.5 or later
Is CVE-2026-27119 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 5.39.3, < 5.51.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |