# CVE-2019-0624: Cross-site scripting in Skype

> An attacker can spoof content in Skype for Business 2015 by exploiting a lack of request sanitization, potentially misleading users.

- **Severity:** Medium 5.4 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 17 Jan 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-mmfh-pjvh-368q

## What is CVE-2019-0624?

CVE-2019-0624 is a medium-severity cross-site scripting vulnerability in Microsoft Skype, published on 17 Jan 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A spoofing vulnerability exists when a Skype for Business 2015 server does not properly sanitize a specially crafted request, aka "Skype for Business 2015 Spoofing Vulnerability." This affects Skype.

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

## Which versions are affected by CVE-2019-0624?

It affects 1 product.


Products: Microsoft Skype for Business.

## How do I fix CVE-2019-0624?

No fix has been published for CVE-2019-0624 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-0624 being exploited?

There is no known exploitation of CVE-2019-0624 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Skype

- [CVE-2019-1490](https://insights.sbomify.com/CVE-2019-1490/): Cross-site scripting in Skype for Business Server 2019 CU2 (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-0624 and fix it if it is affected.

What it is: CVE-2019-0624 is a medium-severity cross-site scripting vulnerability in Microsoft Skype, published on 17 Jan 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-0624 in the wild and no public exploit code.

Affected product: Microsoft Skype. 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-2019-0624/ (Markdown: https://insights.sbomify.com/CVE-2019-0624/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-0624
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-0624
- OSV: https://osv.dev/vulnerability/CVE-2019-0624

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-0624/
Summaries are generated and may contain mistakes; the official description above is the record.