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WS-2019-0069

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Date: April 15, 2019

Versions of preact 10.x on prerelease tags alpha and beta prior to 10.0.0-beta.1 are vulnerable to HTML Injection. Due to insufficient input validation the package allows attackers to inject JavaScript objects as virtual-dom nodes, which may lead to Cross-Site Scripting.

Language: JS

Severity Score

Related Resources (3)

https://www.npmjs.com/advisories/835
https://github.com/developit/preact/commit/7a631132535f5c1b5505bb49430bdf144945d3e5
https://www.mend.io/vulnerability-database/WS-2019-0069

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-74

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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