# CVE-2026-116926: Microsoft Teams cross-site scripting in web page generation

Source: https://junglewise.ai/threats/cve-2026-116926-improper-neutralization-of-input-during-web-page-generation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-116926 · Severity: high · CVSS 7.5 · Published 2026-11-10

Microsoft Teams is a widely-used workplace communication and collaboration platform. A cross-site scripting (XSS) vulnerability allows an attacker to inject malicious code that could be executed in users' browsers, potentially enabling account spoofing, credential theft, or unauthorized actions on behalf of the victim.

Technologies: [Microsoft Teams](https://junglewise.ai/threats/technologies/teams). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## 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

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-116926](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-116926)

## Related threats

- [Microsoft Teams Mobile information disclosure](https://junglewise.ai/threats/cve-2026-65769-microsoft-teams-mobile-information-disclosure)
- [Microsoft Teams for Android path traversal remote code execution](https://junglewise.ai/threats/cve-2026-65768-microsoft-teams-for-android-path-traversal-remote-code-execution)
- [Microsoft Teams for Android cross-site scripting](https://junglewise.ai/threats/cve-2026-65767-microsoft-teams-for-android-cross-site-scripting)
- [Microsoft Teams spoofing via improper file access controls](https://junglewise.ai/threats/cve-2026-32185-microsoft-teams-spoofing-via-improper-file-access-controls)
- [Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.](https://junglewise.ai/threats/cve-2026-33823-improper-authorization-in-microsoft-teams-allows-an-authorized)