Nazwa wtyczki	Integrate Dynamics 365 CRM
Type of Vulnerability	Brak autoryzacji
CVE Number	CVE-2025-10746
Pilność	Średni
CVE Publish Date	2025-10-03
Source URL	CVE-2025-10746

Integrate Dynamics 365 CRM (≤ 1.0.9) — Missing Authorization (Broken Access Control)

An actionable guide for WordPress site owners, hosts and developers from a WP‑Firewall security expert

Opublikowany: 3 October 2025
CVE: CVE-2025-10746
Affected plugin: Integrate Dynamics 365 CRM (WordPress plugin) — versions ≤ 1.0.9
Naprawiono w: 1.1.0
Powaga: Medium — CVSS 6.5 (Broken Access Control)
Wymagane uprawnienia: Nieuwierzytelniony

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This advisory explains the risk posed by the missing-authorization vulnerability discovered in the Integrate Dynamics 365 CRM plugin (≤ 1.0.9), why it matters for WordPress sites, how attackers could leverage it, and — most importantly — what you should do now. I’m writing this as an author working on WP‑Firewall, a WordPress security and managed WAF service. I’ve included practical mitigations, defensive WAF rule examples you can apply immediately, detection indicators, developer guidance for a proper patch, and a recommended incident response checklist.

Note: this post avoids posting exploit code or step‑by‑step attack instructions. My aim is to enable defenders — site owners, hosts, and developers — to act fast and safely.

Table of contents

• Summary: what happened
• Why broken access control matters
• How this vulnerability behaves (high level)
• Who is affected
• Exploitability and realistic impact scenarios
• Immediate actions for site owners (emergency checklist)
• Recommended WP‑Firewall / WAF mitigations (virtual patching)
• Long‑term remediation (developer guidance)
• Detection and monitoring: what to look for
• Testing and validation after mitigation
• Communication guidance for agencies and hosts
• Final recommendations
• Secure your site today with WP‑Firewall (free plan)

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Summary: what happened

A bug in Integrate Dynamics 365 CRM (versions up to and including 1.0.9) results in missing authorization checks for one or more plugin actions. In plain terms, certain plugin functions that should require an authenticated, authorized user can be invoked by unauthenticated visitors. The result is a Broken Access Control vulnerability (OWASP A5 category), tracked under CVE‑2025‑10746.

The vendor issued a fix in version 1.1.0. If you can update immediately, do so. If you cannot update (customized environments, staging/production constraints, or compatibility concerns), deploy virtual patches (WAF rules) and other mitigations right away.

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Why broken access control matters

Broken Access Control covers a broad set of issues where authorization or authentication checks are missing, bypassable, or incorrect. Even when such a bug doesn’t look like a direct code execution flaw, it can enable attackers to:

• Trigger privileged plugin actions (configuration changes, onboarding flows, or sync triggers).
• Expose or manipulate data that should be protected.
• Create or escalate access to administrative workflows.
• Trigger outbound connections that leak information or allow pivoting to external systems (e.g., remote CRM endpoints).

Because this vulnerability is exploitable by unauthenticated attackers, the attack surface is large — bots and automated scanners will attempt to find and exploit such weaknesses. That’s why immediate mitigation is essential.

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How this vulnerability behaves (high level)

• The plugin exposes functionality via typical WordPress interfaces (AJAX endpoints, admin page handlers, or REST routes).
• One or more of these handlers do not perform proper capability checks (for example, lacking current_user_can checks) or nonce/permission verification.
• As a result, a remote unauthenticated request can trigger functions intended only for logged‑in or privileged users.

What this means in practice:

• Attackers can call plugin functions directly without being logged in.
• Those functions may perform state‑changing operations or return sensitive information.
• Because the attack requires no user credentials, automation (scanners, bots) can rapidly discover and abuse vulnerable sites.

I will not publish exact exploit requests or endpoint parameters here, but defenders can detect and block suspicious requests as described below.

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Who is affected

• Any WordPress site running Integrate Dynamics 365 CRM plugin at version 1.0.9 or older.
• Sites with the plugin active (not merely installed) are at risk, because the vulnerability is in runtime handlers.
• Even sites not actively using the plugin functionality in production can be targeted — unused plugins that are active still expose endpoints.

If you’re not sure whether the plugin is active on your site:

• Check your plugin list in wp-admin (Plugins > Installed Plugins).
• Search the site files for the plugin folder (integrate-dynamics-365-crm or similar).
• Check composer or build pipelines for plugin packages.

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Exploitability and realistic impact scenarios

CVSS 6.5 (Medium) reflects that while the issue allows unauthenticated access, the ultimate impact depends on what the vulnerable functions do. Here are plausible attack scenarios:

1. Privileged configuration change
   An attacker triggers a plugin function that changes API endpoints, stores attacker‑controlled webhook URLs, or alters credentials — enabling persistent control or data exfiltration.
2. Data disclosure
   The vulnerable handler exposes customer or CRM mapping data. Sensitive business data could be leaked.
3. Account or site modification
   If the plugin can create or modify settings that indirectly affect user accounts (for example, changing redirect behavior or enabling debug/logging to leak tokens), an attacker may escalate to full site compromise.
4. Pivot to external systems
   The plugin integrates with Dynamics CRM. Misconfigurations triggered remotely could leak CRM tokens or cause the site to make outbound requests that reveal internal information.
5. Automated mass exploitation
   Because the vulnerability is unauthenticated, attackers can scan wide IP ranges and many domains. Automated campaigns could compromise many sites quickly where the plugin is in use.

Real world: in many broken access control cases, initial exploitation leads to follow‑on actions such as plugin backdoors, spam injection, or creation of shell upload endpoints. Treat this vulnerability as urgent.

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Immediate actions for site owners (emergency checklist)

1. Update (preferred)
   • Update Integrate Dynamics 365 CRM plugin to version 1.1.0 or later immediately.
   • Test update on staging if possible, then deploy to production.
2. If you cannot update immediately, apply virtual patching (WAF rule) and hardening (see next section).
3. Temporarily deactivate the plugin if:
   • You cannot apply a WAF rule and
   • The site is critical and you cannot tolerate the risk.
   • Note: Deactivating may disrupt CRM integrations, so coordinate with stakeholders.
4. Audit admin users and settings:
   • Look for new admin users or unexpected role changes.
   • Check plugin settings for newly added webhooks, API keys, or endpoints.
5. Review logs for suspicious activity (see Detection section).
6. Rotate any exposed or potentially affected secrets (API keys, tokens) for the plugin or connected CRM accounts.
7. Notify your team and stakeholders, especially if the plugin deals with CRM contact or customer data.
8. Back up your site and database now (before making changes) to preserve evidence and allow rollback.

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Recommended WP‑Firewall / WAF mitigations (virtual patching)

If you cannot immediately update the plugin on all affected sites, virtual patching at the perimeter is an effective stopgap. The goal of virtual patching is to block malicious requests that try to invoke the vulnerable functionality while permitting legitimate traffic.

High‑level WAF strategy:

• Identify likely plugin entry points (admin‑ajax, plugin-specific URIs, REST routes).
• Block unauthenticated requests that target those entry points unless they include valid WordPress authentication indicators (logged-in cookie, valid nonce, known referer, or other trusted header).
• Rate‑limit and block suspicious scanning patterns for the plugin endpoints.

Example defensive rules (generic patterns — adapt to your environment):

1. Block unauthenticated POST requests to plugin admin endpoints
   Rationale: vulnerable functions are often triggered via POST to admin ajax or plugin handlers.

   If request.method == POST
   and request.uri contains "/wp-admin/admin-ajax.php"
   and request.args has "action" starting_with "integrate_dynamics" (or plugin's action name)
   and NOT request.headers["Cookie"] contains "wordpress_logged_in_"
   then block request
     

2. Require WP‑nonce or logged‑in cookie for dangerous actions
   If the request is missing a WP nonce and is targeting a known plugin action, deny.

   If request.uri matches plugin Endpoint
   and request.POST._wpnonce is absent or invalid
   then block
     

3. Block unsolicited REST calls to plugin routes
   If the plugin exposes custom REST routes, restrict access to authenticated users:

   If request.uri matches "^/wp-json/integrate-dynamics/.*"
   and request.headers["Authorization"] absent
   and request.headers["Cookie"] does not contain "wordpress_logged_in_"
   then block
     

4. Block by referer and user agent heuristics for mass scanning
   Many scanners use empty referers and suspicious user agents. Use a combination of heuristics, rate-limiting and challenge (CAPTCHA) when possible.
5. Host‑level access control
   If the plugin is used only by a small set of IPs (e.g., integration from a corporate IP), restrict access to those IPs only.

Important notes about WAF rules:

• Tailor rules to match your plugin’s specific endpoints. Overly broad rules risk breaking legitimate site functionality.
• Test rules on staging before wide deployment.
• Log blocked requests for forensic analysis.
• Virtual patching is a mitigation — not a substitute for applying the official plugin update.

If you run WP‑Firewall, enable the Managed WAF / virtual patching feature. Our service can push tailored virtual patches for this specific vulnerability so you’re protected instantly across many sites while you schedule updates.

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Long‑term remediation (developer guidance)

If you are a plugin developer or maintainer, fix the root cause rather than relying on WAFs.

Checklist for patching missing authorization issues:

1. Enforce capability checks for all admin actions
   Używać bieżący_użytkownik_może() to verify that the caller has the required capability.
   Przykład:

   if ( ! current_user_can( 'manage_options' ) ) {
       wp_send_json_error( 'Unauthorized', 403 );
   }
       

2. Validate nonces for AJAX and form handlers
   For admin-ajax handlers and form submissions, use sprawdź_ajax_referer() Lub check_admin_referer() to verify WP nonces.

   check_ajax_referer( 'my_action_nonce', '_wpnonce' ); // dies on failure by default
       

3. For REST API routes, implement a permission_callback
   Register routes with permission_callback that returns true only for authenticated and authorized users.

   register_rest_route( 'integrate-dynamics/v1', '/sync', array(
       'methods' => 'POST',
       'callback' => 'my_sync_handler',
       'permission_callback' => function ( $request ) {
           return current_user_can( 'manage_options' );
       }
   ) );
       

4. Principle of least privilege
   Only grant the minimum capability required.
   Consider creating a custom capability if the action is specific to plugin admin tasks.
5. Avoid relying solely on obscurity
   Security through obscure action names or hidden endpoints is not sufficient.
6. Proper input/output handling
   Sanitize inputs (sanitize_text_field, absint, esc_url_raw).
   Escape outputs when printing to HTML (esc_html, esc_attr).
7. Unit and integration tests
   Add automated tests to verify that unauthenticated users cannot invoke privileged actions.
   Have CI gates that fail builds if permission checks are removed.
8. Disclosure and changelog
   Be transparent in changelogs about security fixes.
   Provide upgrade guidance for site owners (what to check, what to rotate).

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Detection and monitoring: what to look for

Immediate detection steps help determine whether an attack occurred before patching:

1. Web server logs
   Look for POST or GET requests to admin endpoints, admin-ajax.php, wp-json routes, or plugin folder PHP files targeting the plugin.
   Watch for repeated requests from single IPs or unusual user agents.
2. WordPress logs and plugin logs
   If the plugin produces logs or debug output, search for unexpected handler invocations, errors, or access to admin functions by anonymous actors.
3. Authentication and user changes
   Unexpected creation of admin or high-privilege users.
   Password resets or role changes.
4. Outbound connections
   Look for recent outbound requests to unfamiliar domains or CRM endpoints that were not expected.
   Monitor for spikes in outbound traffic from the web server.
5. File system changes
   Unexpected file uploads, modified core files, or new PHP files in uploads or theme/plugin directories.
6. Alerts from security plugins or host IDS
   Prioritize alerts that relate to admin-ajax, REST calls, or suspicious URIs.
7. WAF logs
   If you implemented virtual patches, track blocked requests and investigate frequent offenders.

Indicators of Compromise (IoC) examples:

• Repeated POSTs to plugin endpoints with no authentication.
• New scheduled tasks/crons that reference plugin functions.
• Unexpected configuration change entries in the database (options table).

If you find evidence of exploitation, follow the incident response checklist below.

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Incident response checklist (if you suspect compromise)

1. Isolate
   Serve the site from maintenance mode or block public access temporarily (if feasible) to stop further exploitation.
2. Preserve logs and evidence
   Collect web server logs, WAF logs, database snapshots and plugin logs before making changes.
3. Rotate keys and credentials
   Replace any API keys, tokens or credentials used by the plugin and external CRM integrations.
4. Clean up and restore
   If the site is compromised, restore from a known good backup where possible.
   Remove malicious files and backdoors carefully; do not rely solely on automated scanners.
5. Reassess access
   Review admin users, change all passwords for admin accounts and the site’s service accounts.
6. Apply patches
   Update the plugin to 1.1.0 (or later) and any other out‑of‑date components.
7. Strengthen defenses
   Enable the WAF rules described earlier, enable two‑factor authentication for admins, and harden server configurations.
8. Post‑incident reporting
   If sensitive customer data was exposed, follow applicable data breach notification laws and inform affected parties.
9. Learn and prevent recurrence
   Update your change management and patching cadence; consider continuous monitoring services.

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Testing and validation after mitigation

After applying fixes and/or virtual patches, validate that the site behaves and is protected.

1. Verify plugin update: plugin version 1.1.0 (or later) is installed and active.
2. Confirm WAF rules:
   • Test that legitimate, authenticated use of plugin features still works.
   • Verify that unauthenticated attempts to reach the same endpoints are blocked.
3. Review logs:
   • Ensure blocked attempts are recorded with source IP and request details.
4. Run a focused security scan:
   • Use internal scanners or reputable external auditing services to confirm that Broken Access Control issues are resolved.
5. Monitor for reattempts:
   • Keep WAF and site monitoring elevated for at least 30 days after patching because attackers will re-scan after disclosures.

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Communication guidance for agencies and hosts

If you manage sites for clients or operate shared hosting, communicate clearly and quickly:

• Identify affected sites and prioritize remediation by risk (high traffic, ecommerce, sensitive data).
• Send clear instructions:
  • Update plugin to 1.1.0
  • If unable to update immediately, enable managed WAF rules or temporarily disable the plugin
• Provide status updates:
  • Acknowledge the issue, describe steps you are taking, and offer expected timelines.
• Offer support:
  • If you provide managed security, offer to apply virtual patches and monitor logs until sites are updated.
• Maintain transparency about data exposure (if any) and next steps to mitigate repercussions.

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Final recommendations

1. Update the plugin now — 1.1.0 includes the official fix.
2. If you manage many sites or host clients, deploy WAF virtual patches immediately to reduce the window of exposure.
3. Harden WordPress admin access (limit IP, enable 2FA, strong passwords).
4. Rotate credentials associated with the plugin/integration that may have been exposed.
5. Add permission and nonce checks to custom plugins and review other plugins for similar weaknesses.
6. Monitor and respond quickly — automation helps but human review is essential.

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If you want, WP‑Firewall can assess your environment, deploy a tailored virtual patch for this vulnerability across your sites, and provide a remediation plan. Contact our support through the WP‑Firewall dashboard or follow the invite link after signing up to the free plan.

Stay safe, and patch promptly. If you’d like assistance drafting communication templates for your clients or automation scripts to check plugin versions across many sites, I can prepare those next.