CVE-2026-26135 Azure Custom Locations Resource Provider (RP) Elevation of Privilege Vulnerability
An authorized attacker can exploit Server-Side Request Forgery in Azure Custom Locations Resource Provider 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-2026-26135?
CVE-2026-26135 is a critical server-side request forgery vulnerability in Microsoft Azure Custom Locations Resource Provider, published on 2 Apr 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 Azure Custom Locations Resource Provider (RP) allows an authorized attacker to elevate privileges over a network.
Weakness: CWE-918
Which versions are affected by CVE-2026-26135?
It affects 1 product.
Products include Microsoft Azure Custom Locations Resource Provider.
How do I fix CVE-2026-26135?
No fix has been published for CVE-2026-26135 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-2026-26135 being exploited?
There is no known exploitation of CVE-2026-26135 in the wild and no public exploit code.
Sources
Also known as GHSA-88cw-hhx8-8crw.