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.

INFO

Published Date :

2026-02-20T22:28:37.824Z

Last Modified :

2026-02-23T19:23:03.403Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-27122 vulnerability.

Vendors Products
Svelte
  • Svelte
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-27122.

URL Resource
https://github.com/sveltejs/svelte/security/advisories/GHSA-m56q-vw4c-c2cp cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-27122 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-27122 cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact