CVE-2019-18653 Cross-site scripting in n/a
An attacker can execute JavaScript code via a malicious SSID name in the Avast Antivirus network notification popup.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-18653?
CVE-2019-18653 is a medium-severity cross-site scripting vulnerability in n/a, published on 1 Nov 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A Cross Site Scripting (XSS) issue exists in Avast AntiVirus (Free, Internet Security, and Premiere Edition) 19.3.2369 build 19.3.4241.440 in the Network Notification Popup, allowing an attacker to execute JavaScript code via an SSID Name.
Weakness: CWE-79
Which versions are affected by CVE-2019-18653?
It affects 1 product.
Products include Avast Antivirus.
How do I fix CVE-2019-18653?
No fix has been published for CVE-2019-18653 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2019-18653 being exploited?
There is no known exploitation of CVE-2019-18653 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2025-13032 Race condition in (Free/Inernet Security/Ultimate) Antivirus
- CVE-2020-10867 Security feature bypass in n/a
- CVE-2017-8307 Missing authorization in n/a
- CVE-2025-3500 Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation
- CVE-2021-45335 Missing authorization in n/a
Sources
Also known as GHSA-c7cg-5x5v-hrhj.