CVE-2020-10146: Microsoft Teams

Medium severity, CVSS 5.4. EPSS: 2.3% chance of exploitation in the next 30 days.

The Microsoft Teams online service contains a stored cross-site scripting vulnerability in the displayName parameter that can be exploited on Teams clients to obtain sensitive information such as authentication tokens and to possibly execute arbitrary commands. This vulnerability was fixed for all Teams users in the online service on or around October 2020.

Affected products

• Microsoft Teams: before 2020-10-29 (fixed in 2020-10-29)

Published 2020-12-09. Last modified 2026-06-17.