Quick answers
- Is CVE-2026-121664 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-121664 being exploited in the wild.
- How severe is CVE-2026-121664?
- High severity, with a CVSS score of 8.3, published 10 November 2026.
- Which products and versions are affected?
- Microsoft Visual Studio Code.
- Is there a fix for CVE-2026-121664?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-121664 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-121664?
- Check whether you run Microsoft Visual Studio Code. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A cross-site scripting (XSS) vulnerability exists in Visual Studio Code due to improper neutralization of user input during web page generation. The vulnerability can be exploited over the network and allows an unauthorized attacker to execute arbitrary code; no additional authentication or user interaction beyond normal product use appears required.
Affected products
- Microsoft Visual Studio Code
Timeline
- 2026-11-10: disclosed