プラグイン名	PowerBI Embed Reports
Type of Vulnerability	Sensitive Data Exposure
CVE Number	CVE-2025-10750
緊急	低い
CVE Publish Date	2025-10-18
Source URL	CVE-2025-10750

What the PowerBI Embed Reports Plugin CVE-2025-10750 Means for Your WordPress Site — Analysis, Risks & Practical Mitigations

著者： WP‑Firewall Security Team
日付： 2025-10-18
タグ: WordPress, WAF, Security, PowerBI, Vulnerability

まとめ
A recent disclosure (CVE-2025-10750) reports an “Unauthenticated Sensitive Information Disclosure” vulnerability affecting the PowerBI Embed Reports WordPress plugin (versions <= 1.2.0). This post explains what that means for site owners, how an attacker could misuse exposed data, practical detection steps, immediate mitigations, long‑term hardening, and how a managed WordPress firewall provider can protect sites while you patch.

---

Why you should read this (short)

If your WordPress site uses the PowerBI Embed Reports plugin (any version up to 1.2.0) — or if you embed Power BI dashboards via any plugin — treat this disclosure as high‑priority from an operational perspective. The weakness allows unauthenticated parties to access information that should remain secret (embed tokens, tenant IDs, dataset identifiers, or other configuration payloads). Those artifacts may be usable to view reports, infer internal architecture, or assist further attacks.

This article walks you through:

• What the vulnerability is and why it matters.
• The real impact to WordPress sites and to data confidentiality.
• Immediate steps to mitigate risk (including hardening, detection, and patching).
• How a web application firewall (WAF) / managed virtual patching can protect you now.
• Long‑term developer and operational best practices.

---

Quick technical summary

• Vulnerability type: Unauthenticated Sensitive Information Disclosure (OWASP A3).
• Affected component: PowerBI Embed Reports plugin for WordPress, versions <= 1.2.0.
• CVE: CVE-2025-10750
• 攻撃ベクトル: HTTP requests to plugin endpoints (or endpoints exposed by the plugin) that return sensitive configuration data without proper authentication or access control.
• Primary risk: Exposure of embed tokens, tenant identifiers, dataset/report IDs, service principal details, or admin configuration values that can be used to access or reconstruct data views and assist lateral attacks.
• 修復: Upgrade plugin to fixed version (1.2.1 or later). If you cannot update immediately, implement mitigations (WAF rules, restrict access to the plugin endpoints, rotate any exposed credentials/tokens).

---

What “sensitive information disclosure” actually means in this case

Not all vulnerabilities that disclose information immediately permit a remote attacker to exfiltrate your entire site or database — but they often provide the essential keys for more severe attacks. In this case, the plugin may be returning internal data (for example, an “embed token” or configuration object) via a publicly reachable HTTP endpoint. Even if that token is time‑limited, the attacker can:

• Use the token to view embedded Power BI reports that should be private.
• Enumerate tenant IDs, workspace IDs, and dataset IDs — useful intelligence for social engineering and targeted attacks.
• Combine disclosed data with other vulnerabilities (or misconfigurations) to escalate access or pivot to other systems.
• Automate scanning across many WordPress sites to harvest tokens and build a reusable dataset.

The defining feature here is “unauthenticated” — anyone on the internet can query the vulnerable endpoint. That makes mass exploitation trivial for automated scanners and botnets.

---

Real‑world impact scenarios

Here are concise, practical scenarios of what can go wrong after such a disclosure.

1. Viewing confidential dashboards
   If your reports embed financial, HR, or operational dashboards that are intended for internal audiences, an attacker with an embed token can view sensitive metrics without needing an account.
2. Data exposure aggregation
   Combined with other leaks (e.g., backups, misconfigured storage), an attacker could aggregate data from multiple sources and perform reconnaissance that supports a more damaging attack (fraud, extortion, corporate espionage).
3. Pivot to vendor/tenant accounts
   A tenant or workspace ID plus an identifiable service principal name can accelerate attempts to target the Power BI tenant, spear‑phish administrators, or target third‑party integrations.
4. Automated mass scanning and resale of tokens
   Attackers routinely scan and collect tokens en masse to sell or reuse. Tokens harvested from multiple websites can lead to widespread unauthorized access to embedded content across many organizations.
5. Reputation and compliance fallout
   Leakage of dashboards with personally identifiable information (PII) can trigger privacy regulator obligations, breach notifications, and reputational damage.

---

Immediate actions for site owners (to be executed now)

If your site uses the plugin, follow these step‑by‑step actions in order of priority.

1. Identify plugin usage
   • WordPress admin: Plugins → Installed Plugins → look for “PowerBI Embed Reports”.
   • WP‑CLI: wp plugin list --status=active | grep -i powerbi
   • File system: search for plugin folder (e.g., wp-content/plugins/embed-power-bi-reports)
2. Patch the plugin immediately
   • Update to version 1.2.1 or later through the WordPress admin or WP‑CLI:
     • WP‑CLI: wp plugin update embed-power-bi-reports
   • If the update is unavailable via the dashboard, download the fixed version from the plugin repository and upload.
3. If you cannot update right away: place temporary access restrictions
   • Restrict access to the plugin’s public endpoints (deny by IP, require authentication, or block with a ruleset).
   • Example Nginx snippet to deny direct access to a specific plugin file/endpoint:

     location ~* /wp-content/plugins/embed-power-bi-reports/.+ {
         deny all;
         return 403;
     }

     Note: Use this only if the blocking won’t break legitimate functionality for authorized users. A better short‑term option is to restrict to trusted IPs.

4. Rotate keys and tokens
   • Any Power BI embed tokens, service principal credentials, or keys that may have been handled by the plugin should be considered potentially exposed. Rotate them as soon as possible from the Power BI / Azure portal.
5. Review logs and indicators of suspicious access
   • Check web server access logs for requests targeting the plugin’s endpoints around the disclosure timeframe.

     grep -E "embed-power-bi-reports|powerbi" /var/log/nginx/access.log* | less

   • Look for repeated unauthenticated requests or unusual user agents and high request rates from single IPs.
6. Scan your site for indicators of compromise
   • Run a full malware/indicator scan (file integrity, unknown admin users, scheduled tasks (cron), outgoing network connections from PHP).
   • If you detect any signs, isolate the environment and engage incident response.
7. Communicate internally
   • Notify stakeholders and document all actions taken: dates, times, rotated credentials, detection results.

---

Detection guidance — what to look for in logs

Successful post‑exploitation or reconnaissance is often preceded by a high volume of requests to a few endpoints. Add these hunts to your checklist:

• Repeated GET/POST requests to plugin paths (common patterns):
  • /wp-content/plugins/embed-power-bi-reports/
  • any /wp-json/* endpoints shipped by the plugin
  • parameters like embedToken, accessToken, workspaceId, reportId
• Sudden traffic spikes from a small set of IPs or cloud provider IP ranges (scanners).
• Requests with unusual user agents or missing typical browser headers (bots).
• Requests that result in 200 responses for endpoints that should require authentication.

If you see suspicious activity, collect and preserve logs (web server, PHP, WordPress debug, plugin logs) for further analysis.

---

How a managed WordPress firewall (WAF) can help you now

Managed WAFs provide two immediate and essential security benefits while you prepare and apply a long‑term fix:

1. Virtual patching (rapid mitigation)
   • A WAF can be configured to block access to the specific vulnerable plugin endpoints, to deny requests that attempt to retrieve tokens, and to stop automated scanners from harvesting sensitive artifacts.
   • Virtual patching is especially useful when a plugin update cannot be applied immediately (for compatibility testing or downtime considerations).
2. Detection and telemetry
   • WAFs produce detailed logs and alerts for attempts to exploit the exposed endpoint, enabling forensic analysis and faster incident response.

Example mitigation rules a WAF operator might add (conceptual, not vendor specific):

• Block requests to known plugin paths:
  • If Request URI matches regex: ^/wp-content/plugins/embed-power-bi-reports/.* → Block
• Block requests with suspicious parameters:
  • If request contains parameter names (case‑insensitive): embedtoken|accesstoken|access_token|workspaceid|reportid → Block unless source IP is in allowlist.
• Rate limit requests to plugin endpoints from single source IPs to mitigate scanning.

Note: Apply rules carefully — overly broad blocking can break legitimate uses. Test in monitoring (log only) mode before full enforcement.

---

If you find evidence of exposure — incident response checklist

If you confirm that your site returned sensitive data to unauthenticated requests, follow this checklist:

1. Rotate all exposed tokens and credentials immediately.
2. Patch the plugin to the latest fixed version.
3. Put the site behind stronger access controls:
   • Restrict public access to the plugin functionality (IP allowlist, VPN, or authenticated proxy).
4. Preserve logs and create an incident timeline.
5. Scan for any lateral activity:
   • New admin users
   • Changes to files, especially in wp-content/uploads or theme/plugin directories
   • Unusual scheduled tasks or outbound connections
6. Notify affected stakeholders and follow any regulatory obligations for data exposure.
7. Consider a full post‑incident review with security logging turned on and periodic scans scheduled.

---

Hardening and prevention: beyond this single vulnerability

Treat this event as a reminder to apply stronger application hygiene across your WordPress estate:

• Least privilege for plugins
  • Only install plugins you need. Limit plugin administrators, and remove inactive plugins.
• Plugin lifecycle management
  • Keep an inventory of plugins and owners. Test updates in staging and push to production during maintenance windows.
• Secrets management
  • Never hardcode long‑lived credentials in plugin configuration files. Use short‑lived tokens when possible and central secrets stores when applicable.
• Endpoint minimization
  • Avoid publicly exposing plugin endpoints that serve configuration. If an endpoint must be public, require an authenticated, signed request.
• Logging and monitoring
  • Centralize logs (web server, PHP, WAF). Define alert thresholds for anomalous request patterns.
• Emergency patching playbook
  • Establish an emergency plan: how and when to apply urgent patches or fallback mitigations. Assign roles and contact lists.

---

Developer guidance: how this class of issue should be fixed

For plugin authors and maintainers, this disclosure highlights repeatable development mistakes. Recommended coding and architecture changes include:

1. Enforce access control on all endpoints
   Any endpoint that returns configuration or tokens should require authentication and strict authorization checks. Don’t rely on obscurity.
2. Don’t emit secrets in responses
   Avoid including long‑lived secrets or tokens in responses. If ever required, use server‑side rendering for authorized users only and use ephemeral tokens.
3. Provide minimum‑scope tokens
   When using embed flows, prefer short‑lived tokens with minimal privileges (read‑only, scoped to a single report or dataset).
4. Use standard authentication middleware
   Integrate WordPress nonces, capabilities checks (current_user_can), and if you need API endpoints, use the REST API’s permissions_callback properly.
5. Adopt secure defaults and documented upgrade paths
   Provide admins with clear guidance for rotating keys and updating plugin versions. Ship release notes that explicitly call out security fixes.

---

Sample WAF rules (conceptual examples)

Below are safe, conceptual rules to consider for a managed WAF or inline proxy. These are not plug‑and‑play for all environments; adapt and test them in a staging environment first.

1) Block requests trying to enumerate tokens (pseudo‑mod_security):
SecRule REQUEST_URI|ARGS_NAMES "@rx embedtoken|access_token|accesstoken|workspaceid|reportid" 
    "id:100001,phase:1,deny,status:403,msg:'Block potential PowerBI tokens access',log"

2) Deny direct access to plugin paths (Nginx style):
location ~* ^/wp-content/plugins/embed-power-bi-reports/ {
    return 403;
}

3) Rate limit to stop automated scanners (conceptual):
- Rate limit requests to plugin endpoints to 5 requests per minute per IP. Exceeding that → block or captcha.

Remember: rule accuracy is crucial to avoid false positives.

---

Monitoring & alerting playbook (what to watch after mitigation)

After patching and applying mitigations, keep an eye on these indicators for at least 30 days:

• Continued scanning attempts on the plugin paths.
• Any attempts to use rotated tokens (failed authentications).
• New administrative account creations.
• Unusual file modifications or upload activity.
• Outbound connections from your server to unknown endpoints (checks on cURL/PHP processes).

If any of these occur, escalate to full incident response.

---

For managed WordPress sites: balancing updates and availability

Many organizations delay plugin updates for compatibility testing. That’s understandable — but risk increases with delay. Here’s a practical operational approach:

• Implement a staging environment that mirrors production for safe testing.
• Maintain a cadence for minor and major plugin updates.
• For critical security fixes (like unauthenticated information leaks), plan a short maintenance window to patch or use a WAF virtual patch until you can test fully.
• Keep a backup and rollback plan before any patching operation.

---

Why proactive protection matters: the economics of prevention

A single exposed token can lead to downstream losses that are orders of magnitude larger than the cost of basic protective controls:

• Breach containment, forensic investigation, legal notifications, and potential remediation efforts produce direct and indirect costs.
• Reputation damage to customers and partners is hard to quantify but can be long‑lasting.
• A managed WAF and a coordinated update process dramatically reduce the time-to-protection and exposure window.

Think of virtual patching and a robust update policy as insurance that keeps your site operational while you balance updates with business continuity.

---

A practical example: step-by-step for site administrators

Follow these concrete steps — execute in order:

1. Immediately check whether the plugin is active:
   • WP admin → Plugins or
   • WP‑CLI: wp plugin status embed-power-bi-reports
2. If active, schedule an immediate plugin update:
   • WP admin: Update now
   • WP‑CLI: wp plugin update embed-power-bi-reports
3. If you cannot update within 24 hours:
   • Enable a WAF rule to block plugin paths (contact your managed WAF support or cloud provider support).
   • Restrict access by IP (if end users are predictable in IP ranges).
4. Rotate Power BI tokens and service principals.
5. Search logs for suspicious access and save them:
   • grep for plugin path, suspicious parameters, and unusual UA strings.
6. Monitor for 30 days and keep stakeholders informed.

---

New: Sign up and protect your site with WP‑Firewall Free plan

Secure & Familiar — Start with our free, always‑on protection

• Essential protection you can trust: managed firewall, unlimited bandwidth, a web application firewall (WAF) tuned for WordPress, a malware scanner, and mitigations for OWASP Top 10 risks.
• Fast to deploy: Designed for WordPress, the free plan is easy to activate and will immediately reduce your exposure while you patch vulnerable plugins.
• Upgrade tiers available for automated vulnerability patching, monthly security reports and advanced managed services when you’re ready.

Get started with the WP‑Firewall Basic (Free) plan: https://my.wp-firewall.com/buy/wp-firewall-free-plan/

---

Frequently asked questions (short)

Q: I updated the plugin — am I safe?
A: Updating removes the known vulnerability. After updating, rotate any tokens that might have been cached or logged and keep monitoring logs for suspicious activity.

Q: What if I removed the plugin before the update was available?
A: Removing the plugin reduces immediate exposure. Still rotate any tokens and ensure no residual files or scheduled jobs remain.

Q: Can the WAF protect me forever without updating?
A: A WAF can mitigate many exposures via virtual patching, but it’s not a replacement for updates. Use a WAF as an immediate protective layer until a proper update is applied.

---

Closing notes — practical operational mindset

This disclosure reinforces two essential truths for WordPress site security:

1. Updates matter — but they are only one part of a layered defense.
2. Rapid, reversible mitigations (WAF virtual patches, access restrictions) buy time without disrupting business-critical functionality.

If you manage multiple WordPress sites or if your site contains sensitive dashboards and customer data, incorporate the following into your standard operating procedures:

• An inventory of plugins with owners and update cadence.
• A WAF or application proxy with virtual patching capability and alerting.
• A documented incident response and secrets rotation playbook.

Security is a continuous process. Treat vulnerabilities like CVE‑2025‑10750 not as a one‑time event but as an opportunity to strengthen your processes, reduce blast radius, and move from reactive to proactive protection.

---

著者： WP‑Firewall Security Team
We’re a WordPress security provider focused on practical protection for busy site owners. If you want help implementing any of the steps above, our team can assist with emergency mitigations, log review, and managed WAF protection.