# CVE-2018-15455: Cisco Identity Services Engine Logging Cross-Site Scripting Vulnerability

> Unauthenticated remote attackers can execute cross-site scripting attacks against administrators viewing logs in the Cisco Identity Services Engine Admin Portal.

- **Severity:** Medium 6.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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 available:** No
- **Published:** 23 Jan 2019
- **Updated:** 21 Nov 2024
- **Also known as:** GHSA-fr6w-pg2m-gf67

## What is CVE-2018-15455?

CVE-2018-15455 is a medium-severity cross-site scripting vulnerability in Cisco Identity Services Engine, published on 23 Jan 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 logging component of Cisco Identity Services Engine could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks. The vulnerability is due to the improper validation of requests stored in the system's logging database. An attacker could exploit this vulnerability by sending malicious requests to the targeted system. An exploit could allow the attacker to conduct cross-site scripting attacks when an administrator views the logs in the Admin Portal.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2018-15455?

It affects 1 product.


Products: Cisco Identity Services Engine.

## How do I fix CVE-2018-15455?

No fix has been published for CVE-2018-15455 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-15455 being exploited?

There is no known exploitation of CVE-2018-15455 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Identity Services Engine

- [CVE-2026-76460](https://insights.sbomify.com/CVE-2026-76460/): Cisco Identity Services Engine Incorrect Use of Privileged APIs (critical 10.0, exploited in the wild)
- [CVE-2025-20337](https://insights.sbomify.com/CVE-2025-20337/): Cisco Identity Services Engine Injection (critical 10.0, exploited in the wild)
- [CVE-2025-20281](https://insights.sbomify.com/CVE-2025-20281/): Cisco Identity Services Engine Injection (critical 10.0, exploited in the wild)
- [CVE-2026-20130](https://insights.sbomify.com/CVE-2026-20130/): Cisco Identity Services Engine Hardening Release - Improper Neutralization Vulnerabilities (critical 10.0)
- [CVE-2026-20192](https://insights.sbomify.com/CVE-2026-20192/): Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-15455 and fix it if it is affected.

What it is: CVE-2018-15455 is a medium-severity cross-site scripting vulnerability in Cisco Identity Services Engine, published on 23 Jan 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-15455 in the wild and no public exploit code.

Affected product: Cisco Identity Services Engine. 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-2018-15455/ (Markdown: https://insights.sbomify.com/CVE-2018-15455/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-15455
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-15455
- OSV: https://osv.dev/vulnerability/CVE-2018-15455

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-15455/
Summaries are generated and may contain mistakes; the official description above is the record.