svelte performance oriented web framework. A potential mXSS vulnerability exists in Svelte for versions up to but not including 4.2.19. Svelte improperly escapes HTML on server-side rendering. The assumption is that attributes will always stay as such, but in some situation the final DOM tree rendered on browsers is different from what Svelte expects on server-side rendering. This may be leveraged to perform XSS attacks, and a type of the XSS is known as mXSS (mutation XSS). More specifically, this can occur when injecting malicious content into an attribute within a `noscript` tag. This issue has been addressed in release version 4.2.19. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVE-2024-45047 - Medium Severity Vulnerability
Cybernetically enhanced web apps
Library home page: https://registry.npmjs.org/svelte/-/svelte-3.44.2.tgz
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/svelte/package.json
Dependency Hierarchy: - :x: **svelte-3.44.2.tgz** (Vulnerable Library)
Found in HEAD commit: 04f495c91ab6c5c3804b30f9573d49c5e83a09e8
Found in base branch: master
svelte performance oriented web framework. A potential mXSS vulnerability exists in Svelte for versions up to but not including 4.2.19. Svelte improperly escapes HTML on server-side rendering. The assumption is that attributes will always stay as such, but in some situation the final DOM tree rendered on browsers is different from what Svelte expects on server-side rendering. This may be leveraged to perform XSS attacks, and a type of the XSS is known as mXSS (mutation XSS). More specifically, this can occur when injecting malicious content into an attribute within a `noscript` tag. This issue has been addressed in release version 4.2.19. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Publish Date: 2024-08-30
URL: CVE-2024-45047
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: Required - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: Low - Integrity Impact: Low - Availability Impact: None
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://github.com/sveltejs/svelte/security/advisories/GHSA-8266-84wp-wv5c
Release Date: 2024-08-30
Fix Resolution: 4.2.19
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