# CVE-2026-76427: Cisco ISE XML External Entity Injection Vulnerability


- **Severity:** Medium 4.9 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 16 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** GHSA-46xj-2h8f-mw97

## What is CVE-2026-76427?

CVE-2026-76427 is a medium-severity vulnerability in Cisco Identity Services Engine, published on 16 Sep 2026. 

### Official description

A vulnerability in the offline profiler feed service of Cisco ISE could allow an authenticated, remote attacker to read arbitrary files that are stored on an affected device.

This vulnerability is due to the parsing of attacker-controlled feed metadata with an XML parser that does not disable external entity resolution. An attacker could exploit this vulnerability by uploading a crafted offline feed package through the administrative interface. A successful exploit could allow the attacker to read arbitrary files from the file system and issue requests to internal systems from the affected device. To exploit this vulnerability, the attacker must have valid administrative credentials.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2026-76427?

It affects 1 product.


Products: Cisco Identity Services Engine.

## How do I fix CVE-2026-76427?

No fix has been published for CVE-2026-76427 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-76427 being exploited?

There is no known exploitation of CVE-2026-76427 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-2026-76427 and fix it if it is affected.

What it is: CVE-2026-76427 is a medium-severity vulnerability in Cisco Identity Services Engine, published on 16 Sep 2026. 
Exploitation: There is no known exploitation of CVE-2026-76427 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-2026-76427/ (Markdown: https://insights.sbomify.com/CVE-2026-76427/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76427
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76427
- OSV: https://osv.dev/vulnerability/CVE-2026-76427

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-76427/
Summaries are generated and may contain mistakes; the official description above is the record.