CVE-2019-18893
Last modified
CVE-2019-18893 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 1.77% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Avast | Secure Browser | 77.1.1831.91 |
| Avg | Secure Browser | 77.0.1790.77 |
| Video Downloader Project | Video Downloader | < 1.5 |
References
- https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/Exploit, Third Party Advisory
- https://palant.de/2020/01/13/pwning-avast-secure-browser-for-fun-and-profit/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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