CVE-2026-49159 Microsoft Graph Information Disclosure Vulnerability
An authorized attacker can disclose sensitive information via Microsoft Graph, requiring a patch to prevent unauthorized data access.
- 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-2026-49159?
CVE-2026-49159 is a medium-severity vulnerability in Microsoft Graph, published on 24 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Exposure of sensitive information to an unauthorized actor in Microsoft Graph allows an authorized attacker to disclose information over a network.
Weakness: CWE-200
Which versions are affected by CVE-2026-49159?
It affects 1 product.
Products include Microsoft Graph.
How do I fix CVE-2026-49159?
No fix has been published for CVE-2026-49159 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-49159 being exploited?
There is no known exploitation of CVE-2026-49159 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Graph
Sources
Also known as GHSA-w3q8-77x7-hxrq.