CVE-2020-26067 Cisco Webex Teams Web Interface Cross-Site Scripting Vulnerability
An authenticated attacker can inject malicious scripts via usernames in Cisco Webex Teams, potentially stealing sensitive browser information.
- 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-2020-26067?
CVE-2020-26067 is a medium-severity cross-site scripting vulnerability in Cisco Webex Teams, published on 18 Nov 2024. 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 vulnerability in the web-based interface of Cisco Webex Teams could allow an authenticated, remote attacker to conduct cross-site scripting attacks. The vulnerability is due to improper validation of usernames. An attacker could exploit this vulnerability by creating an account that contains malicious HTML or script content and joining a space using the malicious account name. A successful exploit could allow the attacker to conduct cross-site scripting attacks and potentially gain access to sensitive browser-based information.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Weakness: CWE-80
Which versions are affected by CVE-2020-26067?
It affects 1 product.
Products include Cisco Webex Teams.
How do I fix CVE-2020-26067?
No fix has been published for CVE-2020-26067 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-2020-26067 being exploited?
There is no known exploitation of CVE-2020-26067 in the wild and no public exploit code.
Other vulnerabilities in Cisco Webex Teams
- CVE-2025-20236 Cisco Webex App Client-Side Remote Code Execution Vulnerability
- CVE-2018-0387 Code injection in Cisco Webex Teams unknown
- CVE-2018-0436 Cisco Webex Teams Information Disclosure and Modification Vulnerability
- CVE-2020-3535 Cisco Webex Teams Client for Windows DLL Hijacking Vulnerability
- CVE-2019-1636 Cisco Webex Teams URI Handler Insecure Library Loading Vulnerability
Sources
Also known as GHSA-xhwg-j3rh-2ffw.