CVE-2026-27119

MEDIUM

5.4

Description

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.

CVE Details

CVSS v3.1 Score5.4

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionREQUIRED

Published2/20/2026

Last Modified2/23/2026

Sourcenvd

Honeypot Sightings0

Affected Products

svelte:svelte

Weaknesses (CWE)

CWE-79

References

https://github.com/sveltejs/svelte/security/advisories/GHSA-h7h7-mm68-gmrc(security-advisories@github.com)

IOC Correlations

No correlations recorded

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