CVE-2026-69904: Microsoft Office SharePoint Information Disclosure Vulnerability

Overview

Severity
Low (CVSS 3.5)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C
Category
Information Disclosure
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2026-Sep
Released
2026-09-08
EPSS Score
0.59% (percentile: 46.2%)

Description

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

FAQ

What type of information could be disclosed through this issue? The vulnerability may allow limited exposure of data returned from outbound requests SharePoint makes on the attacker’s behalf, such as external HTTP responses or basic network metadata, but not internal network content or sensitive server information. I am running SharePoint Server 2016. Do the updates for SharePoint Enterprise Server 2016 also apply to the version I am running? Yes. The same KB number applies to both SharePoint Server 2016 and SharePoint Enterprise Server 2016. Customers running either version should install the security update to be protected from this vulnerability. There are multiple update packages available for some of the affected software. Do I need to install all the updates listed in the Security Updates table for the software? Yes. Customers should apply all updates offered for the software installed on their systems. If multiple updates apply, they can be installed in any order.

Affected Products (1)

Microsoft Office

  • Microsoft SharePoint Server Subscription Edition

Security Updates (1)

Acknowledgments

<a href="https://smlijun.github.io/">Dongjun Kim (smlijun)</a> with UIUC, <a href="https://nevul37.github.io/">Jongseong Kim (nevul37)</a> with UIUC, <a href="https://hwiwonl.ee/">Hwiwon Lee (hwiwonl)</a> with UIUC, Joshua Huang, kai63001

Revision History

  • 2026-09-08: Information published.