5.4

CVE-2026-27902

Svelte Vulnerable to XSS via HTML Comment Injection in SSR Error Boundary Hydration Markers

Svelte performance oriented web framework. Prior to version 5.53.5, errors from `transformError` were not correctly escaped prior to being embedded in the HTML output, causing potential HTML injection and XSS if attacker-controlled content is returned from `transformError`. Version 5.53.5 fixes the issue.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Svelte ≫ Svelte SwPlatformnode.js Version >= 5.53.0 < 5.53.5
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.131
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.4 2.8 2.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
security-advisories@github.com 5.3 0 0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/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
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

https://github.com/sveltejs/svelte/releases/tag/svelte%405.53.5
Release Notes
https://github.com/sveltejs/svelte/security/advisories/GHSA-qgvg-pr8v-6rr3
Vendor Advisory
https://github.com/sveltejs/svelte/commit/0298e979371bb583855c9810db79a70a551d22b9
Patch