CVE-2022-25875

MEDIUM

svelte < 3.49.0 - Cross-Site Scripting via Custom toString Function in SSR

Title source: llm
STIX 2.1

Description

The package svelte before 3.49.0 are vulnerable to Cross-site Scripting (XSS) due to improper input sanitization and to improper escape of attributes when using objects during SSR (Server-Side Rendering). Exploiting this vulnerability is possible via objects with a custom toString() function.

References (3)

Core 3
Core References
Exploit, Patch, Third Party Advisory x_refsource_misc
https://snyk.io/vuln/SNYK-JS-SVELTE-2931080

Scores

CVSS v3 5.4
EPSS 0.0073
EPSS Percentile 72.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (2)
npm/svelte 0 - 3.49.0npm
svelte/svelte < 3.49.0
Published Jul 12, 2022
Tracked Since Feb 18, 2026