CVE-2026-20309
Cisco Identity Services Engine Cross-Site Scripting Vulnerability
Description
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to conduct a reflected cross-site scripting (XSS) attack against a user of the interface. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.
INFO
Published Date :
Sept. 16, 2026, 8:17 p.m.
Last Modified :
Sept. 16, 2026, 8:17 p.m.
Remotely Exploit :
Yes !
Source :
cisco
Affected Products
The following products are affected by CVE-2026-20309
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Apply vendor-provided patches for Cisco ISE.
- Ensure user input is properly validated.
- Educate users about crafted link risks.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-20309 vulnerability anywhere in the article.