SB2026090912 - Multiple vulnerabilities in Microsoft SharePoint Server

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Main Vulnerability Database SB2026090912

SB2026090912 - Multiple vulnerabilities in Microsoft SharePoint Server

Published: September 9, 2026

Security Bulletin ID SB2026090912
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 25% Low 75%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Improper access control (CVE-ID: CVE-2026-69273)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to improper access control in vulnerable SharePoint APIs when processing specially formatted unsafe data input. A remote user can send specially formatted input to a susceptible API to execute arbitrary code.


2) SQL injection (CVE-ID: CVE-2026-69636)

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to improper neutralization of special elements used in an sql command in Microsoft Office SharePoint when processing sql commands. A remote user can submit a crafted sql command to disclose sensitive information.

Disclosed information may include organizational email addresses, sites, filenames, or file URLs.


3) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2026-69683)

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to server-side request forgery (SSRF) in Microsoft Office SharePoint when processing network requests. A remote user can send a crafted request to disclose sensitive information.

Successful exploitation can leak private property values.


4) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2026-69904)

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

CVSSv4: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to disclose information.

The vulnerability exists due to server-side request forgery (SSRF) in Microsoft Office SharePoint when handling attacker-controlled outbound requests. A remote user can cause SharePoint to make outbound requests to disclose information.

User interaction is required.


Remediation

Install update from vendor's website.

References