# CVE-2026-20111: Cisco Prime Infrastructure stored XSS in web management interface

Source: https://junglewise.ai/threats/cve-2026-20111-cisco-prime-infrastructure-stored-xss-in-web-management-interface  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-02-04. Updated: 2026-06-29  
License: CC BY 4.0 with a link back

CVE-2026-20111 · Severity: medium · CVSS 4.8 · Published 2026-02-04

Cisco Prime Infrastructure, a platform used for managing network devices and wireless access, contains a security flaw in its web management interface. An attacker with administrative privileges could inject malicious scripts that execute when other users access the system. This could lead to the theft of sensitive browser-based information or unauthorized actions performed on behalf of other administrators.

Technologies: [Cisco Prime Infrastructure](https://junglewise.ai/threats/technologies/prime-infrastructure). Vendors: [Cisco](https://junglewise.ai/threats/vendors/cisco).

## Quick answers

**Is CVE-2026-20111 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-20111 being exploited in the wild.

**How severe is CVE-2026-20111?** Medium severity, with a CVSS score of 4.8, published 4 February 2026.

**Which products and versions are affected?** Cisco Prime Infrastructure All versions prior to 3.10.6 Security Update 02.

**Is there a fix for CVE-2026-20111?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-20111 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-20111?** Check whether you run Cisco Prime Infrastructure at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stored cross-site scripting (XSS) vulnerability exists in the web-based management interface of Cisco Prime Infrastructure due to insufficient validation of user-supplied input. An authenticated, remote attacker with administrative privileges can exploit this by inserting malicious code into specific data fields within the interface. When another user views the affected page, the malicious script executes in the context of their browser session. This can result in the disclosure of sensitive browser-based information or the execution of arbitrary actions. The vulnerability is addressed in Cisco Prime Infrastructure 3.10.6 Security Update 02; users on version 3.9 or earlier are advised to migrate to a fixed release.

## Affected products

- Cisco Prime Infrastructure All versions prior to 3.10.6 Security Update 02

## Timeline

- 2026-02-04: advisory: Initial public release by Cisco
- 2026-02-04: disclosed

## References

- [https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-pi-xss-bYeVKCD](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-pi-xss-bYeVKCD)

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