CVE-2018-0340 Cross-site scripting in Cisco Unified Communications Manager unknown
An authenticated remote attacker can execute arbitrary script code or access sensitive browser-based information via XSS in the Cisco Unified Communications Manager web interface.
- 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-2018-0340?
CVE-2018-0340 is a medium-severity cross-site scripting vulnerability in Cisco Unified Communications Manager, published on 7 Jun 2018. 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 framework of the Cisco Unified Communications Manager (Unified CM) software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against the user of the web interface of the affected system. The vulnerability is due to insufficient input validation of certain parameters passed to the web server. An attacker could exploit this vulnerability by convincing the user to access a malicious link or by intercepting the user request and injecting certain malicious code. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected site or allow the attacker to access sensitive browser-based information. Cisco Bug IDs: CSCvj00512.
Weakness: CWE-79
Which versions are affected by CVE-2018-0340?
It affects 1 product.
Products include Cisco Unified Communications Manager.
How do I fix CVE-2018-0340?
No fix has been published for CVE-2018-0340 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-2018-0340 being exploited?
There is no known exploitation of CVE-2018-0340 in the wild and no public exploit code.
Other vulnerabilities in Cisco Unified Communications Manager
- CVE-2026-20230 Cisco Unified Communications Manager Server-Side Request Forgery (SSRF)
- CVE-2026-20045 Cisco Unified Communications Products Code Injection
- CVE-2025-20309 Cisco Unified Communications Manager Static SSH Credentials Vulnerability
- CVE-2011-1643 Information disclosure in n/a
- CVE-2024-20253 Deserialization in Cisco Packaged Contact Center Enterprise
Sources
Also known as GHSA-h2cv-5r7r-4r2j.