Moole Vulnerability Database

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Medium

CVE-2026-27119

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.

VectorNETWORK

PublishedFeb 20, 2026, 23:16

Published Bysecurity-advisories@github.com

Base Score

Score5.4

Affected Versions

Package (Ecosystem)IntroducedFixedLimit

svelte(npm)5.39.35.51.5N/A

References

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

Weakness Type

CWE-79

CVSS Metrics

Base Score

5.1

Vector String

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Base SeverityMedium

Version

4.0

Attack Vector (AV)

NETWORK