CVE-2021-33853 Cross-site scripting in X2CRM
An attacker can execute arbitrary JavaScript in a user's browser when they access any page of the X2CRM application.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-33853?
CVE-2021-33853 is a medium-severity cross-site scripting vulnerability in X2CRM, published on 16 Mar 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A Cross-Site Scripting (XSS) attack can cause arbitrary code (javascript) to run in a user’s browser while the browser is connected to a trusted website. As the vehicle for the attack, the application targets the users and not the application itself. Additionally, the XSS payload is executed when the user attempts to access any page of the CRM.
Weakness: CWE-79
Which versions are affected by CVE-2021-33853?
It affects 1 product.
Products include X2engine X2crm.
How do I fix CVE-2021-33853?
No fix has been published for CVE-2021-33853 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-2021-33853 being exploited?
There is no known exploitation of CVE-2021-33853 in the wild and no public exploit code.
Other vulnerabilities in X2CRM
Sources
Also known as GHSA-rw8w-376g-f5xw.