Description
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
Published: 2026-10-13
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Information Disclosure
Action: Assess Impact
AI Analysis

Impact

This vulnerability is a server‑side request forgery flaw that enables an attacker with authorized access to the SharePoint Server Subscription Edition to direct the server to make HTTP requests to arbitrary internal or external hosts. The resulting responses can contain sensitive information, creating a risk of data leakage. The weakness aligns with CWE‑918, representing an SSRF condition.

Affected Systems

Affected products are Microsoft SharePoint Server Subscription Edition. No specific version identifiers are supplied, so a full inventory scan of all installed SharePoint instances is recommended.

Risk and Exploitability

The CVSS score of 6.5 indicates a moderate level of severity, and the EPSS score is currently unavailable, suggesting limited observable exploitation data. The vulnerability is not listed in CISA’s KEV catalog. Exploitation requires the attacker to be authorized to the SharePoint environment and to be able to influence request construction; it can be mitigated by restricting outbound network traffic from the server and by ensuring only trusted internal destinations are reachable.

Generated by OpenCVE AI on October 14, 2026 at 03:55 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Deploy the Microsoft Office SharePoint security update that addresses this SSRF flaw.
  • Block or tightly restrict outbound network traffic from SharePoint servers to only approved internal and external endpoints to reduce SSRF impact.
  • Continuously monitor SharePoint logs for unexpected outbound HTTP requests as an early warning indicator of attempted exploitation.

Generated by OpenCVE AI on October 14, 2026 at 03:55 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 14 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
Description Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
Title Microsoft Office SharePoint Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft sharepoint Server
Weaknesses CWE-918
CPEs cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*
Vendors & Products Microsoft
Microsoft sharepoint Server
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Sharepoint Server
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-10-31T18:06:26.776Z

Reserved: 2026-08-03T23:56:34.119Z

Link: CVE-2026-70259

cve-icon Vulnrichment

Updated: 2026-10-13T20:48:25.449Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-13T19:19:44.420

Modified: 2026-10-14T19:58:26.207

Link: CVE-2026-70259

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-14T17:30:04Z

Weaknesses
  • CWE-918

    Server-Side Request Forgery (SSRF)