CVE-2026-82040 UTMStack < 11.2.16 SSRF via IdentityProviderService
Authenticated attackers can exploit an SSRF vulnerability in UTMStack to scan internal networks and access cloud metadata services via the identity-providers endpoint.
- 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-2026-82040?
CVE-2026-82040 is a medium-severity server-side request forgery vulnerability in UTMStack, published on 2 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
UTMStack before 11.2.16 contains a server-side request forgery vulnerability in IdentityProviderService.validateMetadataUrl() that allows authenticated attackers to make the server send requests to arbitrary internal or cloud metadata hosts by supplying a malicious metadata URL to the identity-providers endpoint. Attackers can exploit the POST/PUT /api/identity-providers endpoint with no validation of target host, IP, or scheme to perform internal network port scanning and access cloud instance-metadata services.
Weakness: CWE-918
Which versions are affected by CVE-2026-82040?
How do I fix CVE-2026-82040?
No fix has been published for CVE-2026-82040 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-2026-82040 being exploited?
There is no known exploitation of CVE-2026-82040 in the wild and no public exploit code.
Sources
Also known as GHSA-w93c-mfp3-35p4.