# CVE-2026-102861: Microsoft Office SharePoint privilege elevation via missing authorization

Source: https://junglewise.ai/threats/cve-2026-102861-missing-authorization-in-microsoft-office-sharepoint-allows-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-102861 · Severity: high · CVSS 8.8 · Published 2026-10-13

Microsoft Office SharePoint is a document and team collaboration platform used by organizations to share information and manage content. An authorized attacker can exploit a missing authorization check to elevate their privileges and gain unauthorized access to sensitive data or administrative functions within SharePoint deployments.

Technologies: [Microsoft Office SharePoint](https://junglewise.ai/threats/technologies/office-sharepoint), [Microsoft SharePoint Server](https://junglewise.ai/threats/technologies/sharepoint-server). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-102861 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102861 being exploited in the wild.

**How severe is CVE-2026-102861?** High severity, with a CVSS score of 8.8, published 13 October 2026.

**Which products and versions are affected?** Microsoft Office SharePoint.

**Is there a fix for CVE-2026-102861?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-102861 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-102861?** Check whether you run Microsoft Office SharePoint or Microsoft SharePoint Server. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A missing authorization control in Microsoft Office SharePoint allows an authenticated user to escalate privileges over the network. The vulnerability requires the attacker to already have valid credentials. Successful exploitation grants the attacker elevated permissions beyond their intended role.

## Affected products

- Microsoft Office SharePoint

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102861](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102861)

## Related threats

- [Microsoft Office SharePoint privilege escalation via missing authorization](https://junglewise.ai/threats/cve-2026-88176-missing-authorization-in-microsoft-office-sharepoint-allows-an)
- [Microsoft Office SharePoint XSS privilege escalation](https://junglewise.ai/threats/cve-2026-80095-improper-neutralization-of-input-during-web-page-generation-cross)
- [Microsoft Office SharePoint server-side request forgery](https://junglewise.ai/threats/cve-2026-124210-server-side-request-forgery-ssrf-in-microsoft-office-sharepoint)
- [Microsoft Office SharePoint privilege escalation via incorrect authorization](https://junglewise.ai/threats/cve-2026-123391-incorrect-authorization-in-microsoft-office-sharepoint-allows-an)
- [Microsoft Office SharePoint deserialization of untrusted data](https://junglewise.ai/threats/cve-2026-123390-deserialization-of-untrusted-data-in-microsoft-office-sharepoint)