# CVE-2026-102863: Microsoft Office SharePoint code injection privilege escalation

Source: https://junglewise.ai/threats/cve-2026-102863-improper-control-of-generation-of-code-code-injection-in  
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-2026-102863 · Severity: high · CVSS 8.8 · Published 2026-10-13

Microsoft Office SharePoint, a widely-used document collaboration and content management platform in enterprises, contains a code injection vulnerability that allows authorized users to escalate their privileges within the system. An attacker with legitimate access could inject malicious code to gain higher-level permissions, potentially compromising sensitive documents, configurations, and data accessible to administrative accounts.

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-2026-102863 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102863 being exploited in the wild.

**How severe is CVE-2026-102863?** 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-2026-102863?** 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-2026-102863 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-102863?** 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 code injection flaw in Microsoft Office SharePoint permits an authenticated attacker to inject arbitrary code and escalate privileges across the network. The vulnerability requires prior authorization (valid credentials) to exploit but does not require user interaction beyond normal application usage. Successful exploitation grants the attacker elevated permissions within SharePoint.

## Affected products

- Microsoft Office SharePoint

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102863](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102863)

## 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)