CVE-2026-58647 power bi report server vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Power BI allows an authorized attacker to perform spoofing over a network.
Quick answer
microsoft power bi report server should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- Review vendor advisory for affected versions.
Fixed versions
- Apply the latest vendor-supported patched version.
How to fix it
Improper neutralization of input during web page generation ('cross-site scripting') in Power BI allows an authorized attacker to perform spoofing over a network. This affects Power BI Report Server and can let an attacker spoof content through unsafe web output. Patch the report server and review who can publish or edit reports. Because users trust internal reports, treat suspicious report content and links carefully until the fix is deployed.
- Identify every Power BI Report Server instance affected by CVE-2026-58647.
- Install the latest Microsoft Power BI Report Server security update.
- Restrict report publishing and admin access to trusted users only.
- Review recent reports, embedded content, and links for suspicious changes.
- Limit external access to the report server while patching.
- Review web, server, and authentication logs for unusual report access.
- Remove or quarantine suspicious reports before users open them.
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Verify the fix
- Confirm the Power BI Report Server build is updated.
- Check that no affected server remains unpatched for CVE-2026-58647.
- Open a known safe report and confirm normal rendering after the update.
- Review logs again for suspicious report edits or spoofing attempts.
- Record the server version, patch date, and log review notes.
Related categories
Trusted references
FAQ
What is affected by CVE-2026-58647?
microsoft power bi report server should be checked against the vendor advisory and trusted references linked on this page.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.