# CVE-2016-2279: Cross-site scripting in n/a

> Remote attackers can inject arbitrary web script or HTML into the Rockwell Automation CompactLogix web server, potentially compromising the industrial control system.

- **Severity:** Medium 6.1 (`CVSS:3.1/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:** 2 Mar 2016
- **Updated:** 3 Jun 2026
- **Also known as:** GHSA-grx6-8542-r6c3

## What is CVE-2016-2279?

CVE-2016-2279 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Mar 2016. 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

Cross-site scripting (XSS) vulnerability in the web server in Rockwell Automation Allen-Bradley CompactLogix 1769-L* before 28.011+ allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

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

## Which versions are affected by CVE-2016-2279?

It affects 23 products.


Products: Rockwellautomation Compactlogix 1756-En2f Series a Firmware, Rockwellautomation Compactlogix 1756-En2f Series B Firmware, Rockwellautomation Compactlogix 1756-En2t Series a Firmware, Rockwellautomation Compactlogix 1756-En2t Series B Firmware, Rockwellautomation Compactlogix 1756-En2t Series C Firmware, Rockwellautomation Compactlogix 1756-En2t Series D Firmware, Rockwellautomation Compactlogix 1756-En2tr Series a Firmware, Rockwellautomation Compactlogix 1756-En2tr Series B Firmware, Rockwellautomation Compactlogix 1756-En3tr Series a Firmware, Rockwellautomation Compactlogix 1769-L16er-Bb1b Firmware, Rockwellautomation Compactlogix 1769-L18er-Bb1b Firmware, Rockwellautomation Compactlogix 1769-L18erm-Bb1b Firmware, Rockwellautomation Compactlogix 1769-L23e-Qb1b Firmware, Rockwellautomation Compactlogix 1769-L23e-Qbfc1b Firmware, Rockwellautomation Compactlogix 1769-L24er-Qb1b Firmware, Rockwellautomation Compactlogix 1769-L24er-Qbfc1b Firmware, Rockwellautomation Compactlogix 1769-L27erm-Qbfc1b Firmware, Rockwellautomation Compactlogix 1769-L30er-Nse Firmware, Rockwellautomation Compactlogix 1769-L30er Firmware, Rockwellautomation Compactlogix 1769-L30erm Firmware and 3 more.

## How do I fix CVE-2016-2279?

No fix has been published for CVE-2016-2279 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-2279 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-2279 exists.

Public exploit code:

- Rockwell Scada System 27.011 - Cross-Site Scripting (exploitdb)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-2279 and fix it if it is affected.

What it is: CVE-2016-2279 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Mar 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-2279 exists.

Affected product: n/a. 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-2016-2279/ (Markdown: https://insights.sbomify.com/CVE-2016-2279/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-2279
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-2279
- OSV: https://osv.dev/vulnerability/CVE-2016-2279

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-2279/
Summaries are generated and may contain mistakes; the official description above is the record.