Description
Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over an adjacent network.
Published: 2026-10-13
Score: 5.7 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Spoofing via Server‑Side Request Forgery
Action: Assess Impact
AI Analysis

Impact

This vulnerability is a server‑side request forgery in Microsoft SharePoint. An attacker with authorized access can cause the server to send HTTP requests to arbitrary destinations within the internal network, effectively allowing them to spoof traffic or interact with adjacent systems. The flaw can be exploited to retrieve sensitive data, manipulate services, or conduct further attacks on internal resources without requiring elevated privileges.

Affected Systems

Microsoft SharePoint Server Subscription Edition is impacted. No specific version details were provided in the advisory.

Risk and Exploitability

The vulnerability has a CVSS score of 5.7, indicating moderate severity. Its EPSS score is 0.00368, indicating a very low exploitation probability, and it is not listed in the CISA KEV catalog, suggesting a lower likelihood of current exploitation. The likely attack vector requires an attacker to have authorized access to SharePoint and to craft malicious content or exploit a link that causes the server to forward requests to internal targets. Given the moderate score and lack of public exploits, the immediate threat is limited, but organizations should assess the risk relative to their own internal segmentation and access controls.

Generated by OpenCVE AI on October 17, 2026 at 05:57 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Identify and isolate SharePoint Server Subscription Edition instances that are potentially vulnerable.
  • Implement strict network segmentation and endpoint security, restricting outbound traffic from SharePoint to only approved destinations, thereby limiting SSRF impact.
  • Apply the principle of least privilege to SharePoint service accounts and disable or harden any functionality that allows the server to issue outbound requests.
  • Monitor logs for anomalous outbound requests originating from SharePoint and investigate any suspicious activity.
  • Check Microsoft’s security updates portal for a patch or mitigation related to this vulnerability.

Generated by OpenCVE AI on October 17, 2026 at 05:57 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 14 Oct 2026 19:30:00 +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 perform spoofing over an adjacent network.
Title Microsoft Office SharePoint Spoofing 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': 5.7, 'vector': 'CVSS:3.1/AV:A/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: 2026-10-31T18:00:39.659Z

Reserved: 2026-10-05T19:03:23.339Z

Link: CVE-2026-105713

cve-icon Vulnrichment

Updated: 2026-10-13T21:11:59.246Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-13T19:17:59.090

Modified: 2026-10-14T19:45:10.393

Link: CVE-2026-105713

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T06:00:04Z

Weaknesses
  • CWE-918

    Server-Side Request Forgery (SSRF)