CVE-2019-12631 Cisco Identity Services Engine Cross-Site Scripting Vulnerability
An unauthenticated remote attacker can execute arbitrary script code or access sensitive browser-based information via a crafted link in the Cisco ISE guest portal.
- 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-2019-12631?
CVE-2019-12631 is a medium-severity cross-site scripting vulnerability in Cisco Identity Services Engine, published on 2 Oct 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 vulnerability in the web-based guest portal of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface. The vulnerability is due to insufficient validation of user-supplied input that is processed by the web-based management interface. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or access sensitive browser-based information.
Weakness: CWE-79
Which versions are affected by CVE-2019-12631?
It affects 1 product.
Products include Cisco Identity Services Engine.
How do I fix CVE-2019-12631?
No fix has been published for CVE-2019-12631 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-2019-12631 being exploited?
There is no known exploitation of CVE-2019-12631 in the wild and no public exploit code.
Other vulnerabilities in Cisco Identity Services Engine
- CVE-2026-76460 Cisco Identity Services Engine Incorrect Use of Privileged APIs
- CVE-2025-20337 Cisco Identity Services Engine Injection
- CVE-2025-20281 Cisco Identity Services Engine Injection
- CVE-2026-20130 Cisco Identity Services Engine Hardening Release - Improper Neutralization Vulnerabilities
- CVE-2026-20192 Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities
Sources
Also known as GHSA-r3cw-4h6g-qxmh.