# CVE-2019-8764: Cross-site scripting in watchOS

> Attackers can execute arbitrary scripts in the context of the user's browser via malicious web content on watchOS.

- **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:** Yes
- **Published:** 18 Dec 2019
- **Updated:** 4 Aug 2024
- **Also known as:** DEBIAN-CVE-2019-8764, GHSA-8g88-79gg-9jfg, UBUNTU-CVE-2019-8764

## What is CVE-2019-8764?

CVE-2019-8764 is a medium-severity cross-site scripting vulnerability in Apple Watchos, published on 18 Dec 2019. 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 logic issue was addressed with improved state management. This issue is fixed in watchOS 6.1. Processing maliciously crafted web content may lead to universal cross site scripting.

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

## Which versions are affected by CVE-2019-8764?

It affects 2 products.


Products: Apple Watchos, Webkitgtk Webkitgtk\+.

## How do I fix CVE-2019-8764?

Upgrade to a fixed version.

## Is CVE-2019-8764 being exploited?

There is no known exploitation of CVE-2019-8764 in the wild and no public exploit code.

## Other vulnerabilities in Apple Watchos

- [CVE-2019-8743](https://insights.sbomify.com/CVE-2019-8743/): Memory corruption in watchOS (high 8.8)
- [CVE-2019-8765](https://insights.sbomify.com/CVE-2019-8765/): Memory corruption in watchOS (high 8.8)
- [CVE-2020-3834](https://insights.sbomify.com/CVE-2020-3834/): Memory corruption in watchOS (high 7.8)
- [CVE-2019-8747](https://insights.sbomify.com/CVE-2019-8747/): Memory corruption in watchOS (high 7.8)
- [CVE-2019-8624](https://insights.sbomify.com/CVE-2019-8624/): Information disclosure in watchOS (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-8764 and fix it if it is affected.

What it is: CVE-2019-8764 is a medium-severity cross-site scripting vulnerability in Apple Watchos, published on 18 Dec 2019. 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-2019-8764 in the wild and no public exploit code.

Affected product: Apple Watchos. 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-2019-8764/ (Markdown: https://insights.sbomify.com/CVE-2019-8764/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-8764
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-8764
- OSV: https://osv.dev/vulnerability/CVE-2019-8764

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-8764/
Summaries are generated and may contain mistakes; the official description above is the record.