SSRF in Microsoft Sharepoint Server Subscription Edition

CVE-2026-70326

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

Vulnerability class: SSRF (Server-Side Request Forgery)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (54.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-70326: held from 0.006 to 0.008.

EPSS over last 30 days · oldest: 0.006 · newest: 0.008 · change: +0.002

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-70326?
CVE-2026-70326 is a high-severity vulnerability in Microsoft Sharepoint Server Subscription Edition, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.8/10. Published 2026-08-11.
How severe is CVE-2026-70326?
High severity. CVSS v3 base score is 8.8 out of 10.