XSS in the Video Downloader component before 1.5 of Avast Secure Browser 77.1.1831.91 and…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:avast:secure_browser:77.1.1831.91:*:*:*:*:*:*:* | 77.1.1831.91 | Vulnerable | Avast |
| cpe:2.3:a:avg:secure_browser:77.0.1790.77:*:*:*:*:*:*:* | 77.0.1790.77 | Vulnerable | AVG |
| cpe:2.3:a:video_downloader_project:video_downloader:*:*:*:*:*:*:*:* | before 1.5 | Vulnerable | Video Downloader Project |
- cpe:2.3:a:avast:secure_browser:77.1.1831.91:*:*:*:*:*:*:* Versions 77.1.1831.91 Vulnerable ·Avast
- cpe:2.3:a:avg:secure_browser:77.0.1790.77:*:*:*:*:*:*:* Versions 77.0.1790.77 Vulnerable ·AVG
- cpe:2.3:a:video_downloader_project:video_downloader:*:*:*:*:*:*:*:* Versions before 1.5 Vulnerable ·Video Downloader Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-18893
- 2026-10-03 Alias added: GHSA-7r6v-j7mj-2949
References
Sources
- CVE-2019-18893 · CVE Program
- CVE-2019-18893 · NVD
- FIRST EPSS
- GHSA-7r6v-j7mj-2949 · GitHub Advisory Database · CC BY 4.0
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