CVE-2026-33823 Microsoft Team Events Portal Information Disclosure Vulnerability
An authorized attacker can exploit improper authorization in Microsoft Teams to disclose sensitive information over the network.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-33823?
CVE-2026-33823 is a critical missing authorization vulnerability in Microsoft Teams, published on 7 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network.
Weakness: CWE-285
Which versions are affected by CVE-2026-33823?
It affects 1 product.
Products include Microsoft Teams.
How do I fix CVE-2026-33823?
No fix has been published for CVE-2026-33823 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-33823 being exploited?
There is no known exploitation of CVE-2026-33823 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Teams
- CVE-2026-65667 Microsoft Teams Elevation of Privilege Vulnerability
- CVE-2026-62896 Microsoft Teams Elevation of Privilege Vulnerability
- CVE-2026-65767 Microsoft Teams for Android Spoofing Vulnerability
- CVE-2026-65768 Microsoft Teams Remote Code Execution Vulnerability
- CVE-2023-29328 Microsoft Teams Remote Code Execution Vulnerability
Sources
Also known as GHSA-w6p3-2c62-jm2g.