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.

Metrics

Attack Vector Network

Attack Complexity High

Privileges Required High

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Svelte
  • Svelte

Configuration 1 [-]

cpe:2.3:a:svelte:svelte:*:*:*:*:*:node.js:*:*

No data.

References
Link Providers
https://www.spirityenterprise.com/pentest spirity
https://github.com/sveltejs/svelte/security/advisories/GHSA-h7h7-mm68-gmrc cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-27119 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-27119 cve-icon
History

Mon, 23 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 23 Feb 2026 21:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:svelte:svelte:*:*:*:*:*:node.js:*:*
Metrics cvssV3_1

{'score': 5.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'}

 cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

Mon, 23 Feb 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Svelte
Svelte svelte
Vendors & Products Svelte
Svelte svelte

Sat, 21 Feb 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'}

threat_severity

Moderate

Fri, 20 Feb 2026 22:45:00 +0000

Type Values Removed Values Added
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.
Title Svelte affected by XSS in SSR `<option>` element
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 5.1, '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-23T19:42:58.320Z

Reserved: 2026-02-17T18:42:27.043Z

Link: CVE-2026-27119

cve-icon Vulnrichment

Updated: 2026-02-23T19:42:32.464Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-20T23:16:02.360

Modified: 2026-02-23T20:54:04.723

Link: CVE-2026-27119

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-02-20T22:25:42Z

Links: CVE-2026-27119 - Bugzilla