# CVE-2025-20331: Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabiliy

> Authenticated attackers can inject malicious scripts into Cisco ISE interfaces, enabling arbitrary code execution or data theft in victim browsers.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **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 available:** No
- **Published:** 6 Aug 2025
- **Updated:** 7 Aug 2025
- **Also known as:** GHSA-827f-2gvq-rmfp

## What is CVE-2025-20331?

CVE-2025-20331 is a medium-severity cross-site scripting vulnerability in Cisco ISE Passive Identity Connector, published on 6 Aug 2025. 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-based management interface of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to conduct a stored 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 access sensitive, browser-based information. To exploit this vulnerability, the attacker must have at least a low-privileged account on the affected device.

Weakness: CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page)

## Which versions are affected by CVE-2025-20331?


## How do I fix CVE-2025-20331?

No fix has been published for CVE-2025-20331 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-20331 being exploited?

There is no known exploitation of CVE-2025-20331 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-20331 and fix it if it is affected.

What it is: CVE-2025-20331 is a medium-severity cross-site scripting vulnerability in Cisco ISE Passive Identity Connector, published on 6 Aug 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-20331 in the wild and no public exploit code.

Affected product: Cisco ISE Passive Identity Connector. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-20331/ (Markdown: https://insights.sbomify.com/CVE-2025-20331/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-20331
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-20331
- OSV: https://osv.dev/vulnerability/CVE-2025-20331

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-20331/
Summaries are generated and may contain mistakes; the official description above is the record.