CVE-2019-18893: avast secure_browser Cross-site Scripting

Vulnerability summary

CVE-2019-18893 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in avast secure_browser. EPSS estimates a 1.77% chance of exploitation in the next 30 days, higher than 77.8% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 13-01-2020
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

XSS in the Video Downloader component before 1.5 of Avast Secure Browser 77.1.1831.91 and AVG Secure Browser 77.0.1790.77 allows websites to execute their code in the context of this component. While Video Downloader is technically a browser extension, it is granted a very wide set of privileges and can for example access cookies and browsing history, spy on the user while they are surfing the web, and alter their surfing experience in almost arbitrary ways.

• CWE-79Improper 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.