# CVE-2026-110057: Microsoft Office SharePoint authorization bypass in user-controlled key

Source: https://junglewise.ai/threats/cve-2026-110057-authorization-bypass-through-user-controlled-key-in-microsoft  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-110057 · Severity: medium · CVSS 6.5 · Published 2026-11-10

Microsoft Office SharePoint contains an authorization bypass vulnerability that allows an attacker with valid user credentials to access information they should not be permitted to view. An attacker can exploit this flaw to disclose sensitive data stored in SharePoint over the network without needing higher privileges or special access.

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

## Quick answers

**Is CVE-2026-110057 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-110057 being exploited in the wild.

**How severe is CVE-2026-110057?** Medium severity, with a CVSS score of 6.5, published 10 November 2026.

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

**Is there a fix for CVE-2026-110057?** 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-2026-110057 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-110057?** Check whether you run Microsoft Office SharePoint. 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

The vulnerability is an authorization bypass in SharePoint's key validation mechanism that fails to properly restrict access based on user-controlled input. An authenticated attacker can bypass authorization checks by manipulating a key parameter to access information across the network. A fix is available via Microsoft security updates.

## Affected products

- Microsoft Office SharePoint

## Timeline

- 2026-11-10: advisory

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-110057](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-110057)

## 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)