# CVE-2026-97783: Microsoft Office SharePoint cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-97783-improper-neutralization-of-input-during-web-page-generation-cross  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2026-97783 · Severity: high · CVSS 8.1 · Published 2026-10-13

Microsoft Office SharePoint, a document management and collaboration platform used in corporate environments, contains a cross-site scripting (XSS) vulnerability that allows an attacker to inject malicious code. An exploit could enable account takeover, credential theft, or defacement of business-critical documents and communications visible to authenticated users.

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-2026-97783 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-97783 being exploited in the wild.

**How severe is CVE-2026-97783?** High severity, with a CVSS score of 8.1, published 13 October 2026.

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

**Is there a fix for CVE-2026-97783?** 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-2026-97783 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-97783?** 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 failure to properly sanitize user input during web page generation in SharePoint permits stored or reflected XSS attacks over a network. An attacker can craft malicious input that, when rendered in a victim's browser, executes arbitrary JavaScript with the privileges of the authenticated user, potentially leading to session hijacking or data exfiltration.

## Affected products

- Microsoft Office SharePoint

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97783](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97783)

## 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)