# CVE-2026-45468: Microsoft Office SharePoint cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-45468-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-2026-45468 · Severity: medium · CVSS 4.6 · Published 2026-06-09

Microsoft Office SharePoint, a widely used platform for document management and team collaboration, is affected by a security vulnerability that could allow an attacker to perform spoofing. 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 unauthorized access of sensitive information or the performance of actions 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-2026-45468 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-45468 being exploited in the wild.

**How severe is CVE-2026-45468?** Medium severity, with a CVSS score of 4.6, published 9 June 2026.

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

**Is there a fix for CVE-2026-45468?** 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-2026-45468 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-45468?** 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 stored or reflected cross-site scripting (XSS) vulnerability exists in Microsoft Office SharePoint due to improper neutralization of input during web page generation (CWE-79). 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). Once executed, the attacker can perform spoofing attacks, potentially hijacking user sessions or accessing data within the context of the affected user. Microsoft has released security updates to address this issue.

## Affected products

- Microsoft Office SharePoint

## Timeline

- 2026-06-09: disclosed
- 2026-06-09: advisory

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45468](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45468)

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