What is CVE-2026-26150?

CVE-2026-26150 is a high-severity vulnerability in Microsoft Purview Ediscovery, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-04-23.

How severe is CVE-2026-26150?

High severity. CVSS v3 base score is 8.6 out of 10.

SSRF in Microsoft Purview Ediscovery

CVE-2026-26150

Server-side request forgery (ssrf) in Microsoft Purview allows an unauthorized attacker to elevate privileges over a network.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2026-04-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.8th percentile), scored 2026-09-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

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

References

Microsoft Purview eDiscovery Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-26150?: CVE-2026-26150 is a high-severity vulnerability in Microsoft Purview Ediscovery, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-04-23.
How severe is CVE-2026-26150?: High severity. CVSS v3 base score is 8.6 out of 10.