# CVE-2022-31734: Cross-site scripting in Cisco Catalyst 2940 Series Switches

> Reflected XSS in Cisco Catalyst 2940 switches allows attackers to execute arbitrary scripts in user browsers, but the product is end-of-life.

- **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:** 20 Jun 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-87mg-gx7c-q5gr

## What is CVE-2022-31734?

CVE-2022-31734 is a medium-severity cross-site scripting vulnerability in Cisco Catalyst 2940 Series Switches, published on 20 Jun 2022. 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

Cisco Catalyst 2940 Series Switches provided by Cisco Systems, Inc. contain a reflected cross-site scripting vulnerability regarding error page generation. An arbitrary script may be executed on the web browser of the user who is using the product. The affected firmware is prior to 12.2(50)SY released in 2011, and Cisco Catalyst 2940 Series Switches have been retired since January 2015

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

## Which versions are affected by CVE-2022-31734?

It affects 2 products.


Products: Cisco Ws-C2940-8tf-S Firmware, Cisco Ws-C2940-8tt-S Firmware.

## How do I fix CVE-2022-31734?

No fix has been published for CVE-2022-31734 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-31734 being exploited?

There is no known exploitation of CVE-2022-31734 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-31734 and fix it if it is affected.

What it is: CVE-2022-31734 is a medium-severity cross-site scripting vulnerability in Cisco Catalyst 2940 Series Switches, published on 20 Jun 2022. 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-2022-31734 in the wild and no public exploit code.

Affected product: Cisco Catalyst 2940 Series Switches. 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-2022-31734/ (Markdown: https://insights.sbomify.com/CVE-2022-31734/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-31734
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-31734
- OSV: https://osv.dev/vulnerability/CVE-2022-31734

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-31734/
Summaries are generated and may contain mistakes; the official description above is the record.