# CVE-2026-58647: Microsoft Power BI Report Server cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-58647-microsoft-power-bi-report-server-cross-site-scripting  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-14. Updated: 2026-07-14  
License: CC BY 4.0 with a link back

CVE-2026-58647 · Severity: high · CVSS 8 · Published 2026-07-14

Microsoft Power BI Report Server, a platform for hosting and managing reports, is affected by a security vulnerability that could allow an attacker to perform spoofing attacks. An authorized user could exploit this flaw to execute malicious scripts in another user's browser session. This could lead to unauthorized access to sensitive data, session hijacking, or the manipulation of report content.

Technologies: [Microsoft Power BI Report Server](https://junglewise.ai/threats/technologies/power-bi-report-server). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-58647 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-58647 being exploited in the wild.

**How severe is CVE-2026-58647?** High severity, with a CVSS score of 8, published 14 July 2026.

**Which products and versions are affected?** Microsoft Power BI Report Server 1.6.0 to 15.0.1121.120.

**Is there a fix for CVE-2026-58647?** 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-2026-58647 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-58647?** Check whether you run Microsoft Power BI Report Server at an affected version. 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 Power BI Report Server due to improper neutralization of input during web page generation (CWE-79). An authenticated attacker with network access can exploit this by sending a specially crafted request to the server. Successful exploitation requires a victim to interact with a malicious link or page, allowing the attacker to execute arbitrary script in the context of the victim's browser. This can result in a full compromise of confidentiality, integrity, and availability for the affected user session. The vulnerability affects versions starting from 1.6.0 up to 15.0.1121.120.

## Affected products

- Microsoft Power BI Report Server 1.6.0 to 15.0.1121.120

## Timeline

- 2026-07-14: advisory: Initial publication by Microsoft and NVD.
- 2026-07-14: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58647](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58647)

## Related threats

- [Microsoft Power BI improper input validation RCE](https://junglewise.ai/threats/cve-2026-65811-microsoft-power-bi-improper-input-validation-rce)
- [Microsoft Power BI improper input validation allows code execution](https://junglewise.ai/threats/cve-2026-21229-microsoft-power-bi-improper-input-validation-allows-code)