# CVE-2026-47634: Microsoft Office SharePoint cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-47634-microsoft-office-sharepoint-cross-site-scripting  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-09. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-47634 · Severity: high · CVSS 7.3 · Published 2026-06-09

Microsoft Office SharePoint, a widely used collaboration and document management platform, contains a security vulnerability that could allow an attacker to perform spoofing attacks. By tricking a user into interacting with a malicious link or page, an authorized attacker can execute unauthorized scripts in the victim's browser session. This could lead to the theft of sensitive information or unauthorized actions performed on behalf of the user within the SharePoint environment.

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

## Quick answers

**Is CVE-2026-47634 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47634 being exploited in the wild.

**How severe is CVE-2026-47634?** High severity, with a CVSS score of 7.3, published 9 June 2026.

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

**Is there a fix for CVE-2026-47634?** 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-2026-47634 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-47634?** Check whether you run Microsoft 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

A cross-site scripting (XSS) vulnerability exists in Microsoft Office SharePoint due to improper neutralization of input during web page generation. An attacker with basic user privileges (PR:L) can exploit this by sending a specially crafted request to a SharePoint server. Successful exploitation requires a victim to interact with a malicious link or page (UI:R). This allows the attacker to execute arbitrary script in the context of the victim's browser, potentially leading to session hijacking or unauthorized data access. The vulnerability is tracked as CWE-74/CWE-79 and has a CVSS 3.1 score of 7.3.

## Affected products

- Microsoft Office SharePoint

## Timeline

- 2026-06-09: advisory: Initial advisory published by Microsoft and NVD.

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47634](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47634)

## Related threats

- [Microsoft SharePoint deserialization code execution](https://junglewise.ai/threats/cve-2026-120000-deserialization-of-untrusted-data-in-microsoft-office-sharepoint)
- [Microsoft SharePoint incorrect authorization privilege escalation](https://junglewise.ai/threats/cve-2026-102862-incorrect-authorization-in-microsoft-office-sharepoint-allows-an)
- [Microsoft SharePoint time-of-check time-of-use race condition](https://junglewise.ai/threats/cve-2026-69804-microsoft-sharepoint-time-of-check-time-of-use-race-condition)
- [Microsoft SharePoint missing authorization in code execution](https://junglewise.ai/threats/cve-2026-69724-microsoft-sharepoint-missing-authorization-in-code-execution)
- [Microsoft SharePoint code injection](https://junglewise.ai/threats/cve-2026-65660-microsoft-sharepoint-code-injection)