Quick answers
- Is CVE-2026-116926 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-116926 being exploited in the wild.
- How severe is CVE-2026-116926?
- High severity, with a CVSS score of 7.5, published 10 November 2026.
- Which products and versions are affected?
- Microsoft Teams.
- Is there a fix for CVE-2026-116926?
- 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-2026-116926 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-116926?
- Check whether you run Microsoft Teams. 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
This is a client-side XSS vulnerability in Microsoft Teams' web page generation logic where user-supplied input is not properly neutralized before being rendered in the browser. An attacker can craft a malicious payload that, when processed by Teams, executes arbitrary JavaScript in the victim's session context, leading to session hijacking, phishing, or impersonation attacks.
Affected products
- Microsoft Teams
Timeline
- 2026-11-10: disclosed