CVE-2025-49077: Dynamic Pricing Plugin CSRF Vulnerability

CVE-2025-49077 Overview

CVE-2025-49077 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the ThemeHigh Dynamic Pricing and Discount Rules plugin for WordPress. The flaw impacts all versions of the discount-and-dynamic-pricing plugin up to and including 2.2.9. The issue is tracked under CWE-352 and stems from missing or insufficient CSRF protection on plugin request handlers. An attacker who tricks an authenticated administrator into visiting a crafted page can trigger unwanted state-changing actions inside the WordPress site.

Critical Impact
Successful exploitation allows an unauthenticated remote attacker to abuse an authenticated administrator's session to modify plugin data through forged requests, requiring only user interaction such as clicking a malicious link.

Affected Products

ThemeHigh Dynamic Pricing and Discount Rules plugin (discount-and-dynamic-pricing)
All plugin versions from n/a through 2.2.9
WordPress sites running the affected plugin with authenticated administrator sessions

Discovery Timeline

2025-06-06 - CVE-2025-49077 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-49077

Vulnerability Analysis

The vulnerability is a Cross-Site Request Forgery weakness in the Dynamic Pricing and Discount Rules WordPress plugin. Affected request handlers accept administrative actions without validating a proper anti-CSRF nonce or verifying request origin. An attacker crafts a malicious page that submits requests to the target WordPress site. When a logged-in administrator visits the page, the browser transmits authenticated session cookies alongside the forged request. The plugin then processes the action as if the administrator intended it.

The integrity impact is limited to plugin-managed configuration such as pricing rules and discount settings. There is no direct confidentiality loss and no availability impact according to the published metrics. The user interaction requirement lowers exploitation reliability but does not eliminate it, since phishing and watering-hole tactics remain effective against site administrators.

Root Cause

The root cause is missing or improperly validated CSRF tokens on privileged plugin endpoints. WordPress provides the wp_nonce_field() and check_admin_referer() primitives to prevent this class of issue. Endpoints that omit these checks trust the ambient session cookie as sufficient authorization, which violates the guidance in CWE-352.

Attack Vector

Exploitation occurs over the network and requires user interaction. An attacker hosts an HTML page containing an auto-submitting form or image tag pointing to a vulnerable plugin action URL. The attacker delivers the link through email, social media, or a compromised site. When an authenticated WordPress administrator visits the page, their browser issues the forged request. The plugin executes the action under the administrator's privileges. See the Patchstack CSRF Vulnerability Advisory for the vendor-reported technical details.

Detection Methods for CVE-2025-49077

Indicators of Compromise

Unexpected modifications to pricing rules, discount configurations, or plugin settings inside the WordPress admin interface.
HTTP POST requests to plugin admin endpoints with Referer headers pointing to external or unrelated domains.
Administrator account activity showing plugin configuration changes without a corresponding admin login session in access logs.

Detection Strategies

Review web server access logs for cross-origin Referer or Origin headers on requests targeting wp-admin/admin.php actions belonging to the discount-and-dynamic-pricing plugin.
Enable WordPress audit logging to record all plugin configuration changes with the responsible user, source IP, and timestamp.
Correlate plugin settings modifications with recent phishing reports or suspicious email delivery to administrator accounts.

Monitoring Recommendations

Alert on plugin configuration changes that occur outside of expected maintenance windows or from unusual administrator geolocations.
Track outbound clicks from administrator workstations to untrusted domains that could host CSRF payloads.
Baseline the plugin's admin request patterns and flag deviations, particularly requests missing valid WordPress nonces.

How to Mitigate CVE-2025-49077

Immediate Actions Required

Update the ThemeHigh Dynamic Pricing and Discount Rules plugin to a version later than 2.2.9 once the vendor publishes a patched release.
Instruct WordPress administrators to log out of admin sessions before browsing untrusted content and to use a dedicated browser profile for site administration.
Audit recent plugin configuration changes and revert any unauthorized modifications to pricing or discount rules.

Patch Information

Refer to the Patchstack CSRF Vulnerability Advisory for the current patch status. The advisory covers all versions from n/a through 2.2.9. Site owners should monitor the ThemeHigh plugin changelog for a fixed release that adds proper nonce validation using check_admin_referer() or wp_verify_nonce().

Workarounds

Deploy a web application firewall (WAF) rule that blocks requests to the plugin's admin endpoints when the Referer header does not match the site's own origin.
Restrict access to /wp-admin/ by source IP address using server-level controls until a patched plugin version is available.
Enforce SameSite=Strict or SameSite=Lax cookie attributes on WordPress session cookies to reduce the reliability of cross-site request forgery.
Temporarily deactivate the Dynamic Pricing and Discount Rules plugin if the discount functionality is not business-critical.

bash

# Example Apache configuration to block cross-origin POSTs to the plugin endpoints
<LocationMatch "/wp-admin/admin\.php">
    SetEnvIfNoCase Referer "^https?://your-site\.example/" local_ref
    <RequireAll>
        Require all granted
        Require env local_ref
    </RequireAll>
</LocationMatch>