In svelte before 3.46.5 some attribute values are incorrectly escaped during ssr. The security issue is that objects, on the other hand, were rendered directly to attribute values as unescaped strings. This means an object with a custom toString() can result in raw html injection.
WS-2022-0167 - Medium Severity Vulnerability
Path to dependency file: /package.json
Path to vulnerable library: /node_modules/svelte/package.json
Dependency Hierarchy: - :x: **svelte-3.45.0.tgz** (Vulnerable Library)
Found in HEAD commit: 395b56b03a73fb5861e3846a02ad9928e18944c4
Found in base branch: master
In svelte before 3.46.5 some attribute values are incorrectly escaped during ssr. The security issue is that objects, on the other hand, were rendered directly to attribute values as unescaped strings. This means an object with a custom toString() can result in raw html injection.
Publish Date: 2022-06-22
URL: WS-2022-0167
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: Required - Scope: Changed - Impact Metrics: - Confidentiality Impact: Low - Integrity Impact: Low - Availability Impact: None
For more information on CVSS3 Scores, click here.Type: Upgrade version
Release Date: 2022-06-22
Fix Resolution: svelte - 3.46.5
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