CVE-2026-27122

MEDIUM

5.4

Description

svelte performance oriented web framework. Prior to 5.51.5, when using <svelte:element this={tag}> in server-side rendering, the provided tag name is not validated or sanitized before being emitted into the HTML output. If the tag string contains unexpected characters, it can result in HTML injection in the SSR output. Client-side rendering is not affected. This vulnerability is fixed in 5.51.5.

Details CVE

Score CVSS v3.15.4

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurREQUIRED

Publie2/20/2026

Derniere modification2/23/2026

Sourcenvd

Observations honeypot0

Produits affectes

svelte:svelte

Faiblesses (CWE)

CWE-79

References

https://github.com/sveltejs/svelte/security/advisories/GHSA-m56q-vw4c-c2cp(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

This product uses data from the NVD API but is not endorsed or certified by the NVD.