Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2020-27428
CVE-2020-27428:
JavaScript vulnerability analysis and mitigation
Overview
A DOM-based cross-site scripting (XSS) vulnerability was discovered in Scratch-Svg-Renderer version 0.2.0. The vulnerability allows attackers to execute arbitrary web scripts or HTML through a specially crafted sb3 file (NVD, CVE).
Technical details
The vulnerability has been assigned a CVSS v3.1 Base Score of 6.1 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation) (NVD).
Impact
If exploited, this vulnerability allows attackers to execute arbitrary web scripts or HTML in the context of the victim's browser session. This could lead to theft of sensitive information, session hijacking, or other malicious actions performed in the context of the affected user (NVD).
Mitigation and workarounds
A patch has been released that removes various event handlers that could be exploited. The fix includes removing multiple event handlers such as onbegin, onend, onrepeat, onabort, onerror, and many others through a comprehensive regex-based approach (GitHub Patch).
Additional resources
Source: This report was generated using AI
Related JavaScript vulnerabilities:
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