CVE-2026-57100 Microsoft Entra Provisioning Service Elevation of Privilege Vulnerability
An authorized attacker can exploit SSRF in Microsoft Entra Provisioning Service to elevate privileges 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-2026-57100?
CVE-2026-57100 is a critical server-side request forgery vulnerability in Microsoft Entra Provisioning Service, published on 2 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Server-side request forgery (ssrf) in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate privileges over a network.
Weakness: CWE-918
Which versions are affected by CVE-2026-57100?
It affects 1 product.
Products include Microsoft Entra Provisioning Service.
How do I fix CVE-2026-57100?
No fix has been published for CVE-2026-57100 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-57100 being exploited?
There is no known exploitation of CVE-2026-57100 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Entra Provisioning Service
Sources
Also known as GHSA-29v8-q543-pf5w.