# CVE-2020-3463: Cisco Webex Meetings Reflected Cross-Site Scripting Vulnerability

> An unauthenticated attacker can execute arbitrary script code or access sensitive browser information by tricking a user into clicking a malicious link in Cisco Webex Meetings.

- **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:** 17 Aug 2020
- **Updated:** 13 Nov 2024
- **Also known as:** GHSA-xfjw-w4w6-9cxc

## What is CVE-2020-3463?

CVE-2020-3463 is a medium-severity cross-site scripting vulnerability in Cisco Webex Meetings Online, published on 17 Aug 2020. 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 web-based management interface of Cisco Webex Meetings could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of the affected service. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected service. An attacker could exploit this vulnerability by persuading a user to click a malicious link. 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.

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

## Which versions are affected by CVE-2020-3463?

It affects 1 product.


Products: Cisco Webex Meetings Online.

## How do I fix CVE-2020-3463?

No fix has been published for CVE-2020-3463 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3463 being exploited?

There is no known exploitation of CVE-2020-3463 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Webex Meetings Online

- [CVE-2018-0287](https://insights.sbomify.com/CVE-2018-0287/): Code injection in Cisco WebEx Advanced Recording Format Player (high 8.8)
- [CVE-2019-1637](https://insights.sbomify.com/CVE-2019-1637/): Cisco Webex Network Recording Player Arbitrary Code Execution Vulnerabilities (high 7.8)
- [CVE-2019-1638](https://insights.sbomify.com/CVE-2019-1638/): Cisco Webex Network Recording Player Arbitrary Code Execution Vulnerabilities (high 7.8)
- [CVE-2019-1639](https://insights.sbomify.com/CVE-2019-1639/): Cisco Webex Network Recording Player Arbitrary Code Execution Vulnerabilities (high 7.8)
- [CVE-2019-1640](https://insights.sbomify.com/CVE-2019-1640/): Cisco Webex Network Recording Player Arbitrary Code Execution Vulnerabilities (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3463 and fix it if it is affected.

What it is: CVE-2020-3463 is a medium-severity cross-site scripting vulnerability in Cisco Webex Meetings Online, published on 17 Aug 2020. 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-2020-3463 in the wild and no public exploit code.

Affected product: Cisco Webex Meetings Online. 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-2020-3463/ (Markdown: https://insights.sbomify.com/CVE-2020-3463/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3463
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3463
- OSV: https://osv.dev/vulnerability/CVE-2020-3463

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-3463/
Summaries are generated and may contain mistakes; the official description above is the record.