Medium4.8Cisco

Medium [CVE-2026-20076] Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerability

This medium-severity Cisco advisory covers CVE-2026-20076 affecting Cisco Identity Services Engine Software, ISE.

cisco-sa-ise-xss-9TDh2kx Published Jan 15, 2026Updated by vendor Jan 15, 2026

CVE-2026-20076

Affected products & platforms

CiscoISEIdentity Services Engine

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Summary

A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface.

This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface.

A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or…

Affected products named by the advisory: Cisco Identity Services Engine Software.

Affected versions

Scope: At the time of publication, this vulnerability affected Cisco ISE, regardless of device configuration.
3.1 and earlier — Migrate to a fixed release
Release 3.2 (first fixed: 3.2 Patch 8)
Release 3.3 (first fixed: 3.3 Patch 5)
Release 3.4 (first fixed: 3.4 Patch 1)

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

3.2 Patch 8
3.3 Patch 5
3.4 Patch 1

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
Release 3.1 and earlier: migrate to a fixed release.
Release 3.2: upgrade to 3.2 Patch 8.
Release 3.3: upgrade to 3.3 Patch 5.
Release 3.4: upgrade to 3.4 Patch 1.

Workaround status

There are no workarounds that address this vulnerability.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Cisco Security Advisories (PSIRT)official
Official vendor feed — the source of truth for this advisory. VulniPulse polled this feed and parsed this entry from it. Discovered from the machine-readable feed https://sec.cloudapps.cisco.com/security/center/psirtrss20/CiscoSecurityAdvisory.xml; this link opens the Cisco advisory index instead of the raw feed document.
Cisco
Vendor advisory pageofficial
Advisory page fetched and parsed to extract affected/fixed versions and mitigation guidance beyond what the feed carries.
Cisco

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-20076NVD CVE.org MITRE

Official resources

Cisco ISE upgrade guide (target: 3.2 / 3.3 / 3.4)
Official documentation
This advisory names 3.2 / 3.3 / 3.4 as the first fixed releases — official upgrade documentation for Cisco Identity Services Engine (ISE).
Cisco ISE release notes
Release notes
Release notes and resolved-caveats list for the fixed ISE version.

Discussion(0)

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