What is CVE-2026-35431?

CVE-2026-35431 is a critical-severity vulnerability in Microsoft Entra_id, classified under Server-Side Request Forgery (SSRF). CVSS score: 10.0/10. Published 2026-04-23.

How severe is CVE-2026-35431?

Critical severity. CVSS v3 base score is 10.0 out of 10.

SSRF in Microsoft Entra_id

CVE-2026-35431

Server-side request forgery (ssrf) in Microsoft Entra ID Entitlement Management allows an unauthorized attacker to perform spoofing over a network.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.001 (27.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Microsoft Entra_id
Microsoft Entra

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

Microsoft Entra ID Entitlement Management Spoofing Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-35431?: CVE-2026-35431 is a critical-severity vulnerability in Microsoft Entra_id, classified under Server-Side Request Forgery (SSRF). CVSS score: 10.0/10. Published 2026-04-23.
How severe is CVE-2026-35431?: Critical severity. CVSS v3 base score is 10.0 out of 10.