CVE-2025-48165 Overview
CVE-2025-48165 is an Incorrect Privilege Assignment vulnerability [CWE-266] in the DELUCKS SEO WordPress plugin. The flaw affects all versions of delucks-seo up to and including 2.6.0. Authenticated attackers with low-level privileges can escalate their access to higher roles within the WordPress site. Successful exploitation grants the attacker administrative control over content, users, and plugin configurations. The vulnerability is network-exploitable and requires no user interaction, making it attractive for opportunistic attacks against unpatched WordPress installations.
Critical Impact
A low-privileged authenticated user can escalate privileges to administrator, leading to full compromise of confidentiality, integrity, and availability of the affected WordPress site.
Affected Products
- DELUCKS SEO WordPress plugin (delucks-seo)
- Versions from n/a through 2.6.0 (inclusive)
- WordPress sites with the vulnerable plugin installed and active
Discovery Timeline
- 2025-08-20 - CVE-2025-48165 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-48165
Vulnerability Analysis
The vulnerability stems from Incorrect Privilege Assignment within the DELUCKS SEO plugin. The plugin fails to enforce proper role and capability checks when handling privileged operations. An authenticated user with minimal permissions, such as a subscriber or contributor, can invoke functionality reserved for administrators. The result is vertical privilege escalation against any WordPress installation running delucks-seo version 2.6.0 or earlier.
The vulnerability affects all three core security properties. Attackers gain read access to restricted content, can modify site data and configurations, and can disrupt site availability through plugin or theme manipulation. Because the plugin is widely deployed for search engine optimization tasks, exploitation can be leveraged for SEO spam injection, malicious redirects, and persistence on compromised sites.
Root Cause
The root cause is missing or insufficient capability checks (current_user_can()) and nonce validation on sensitive plugin actions. WordPress relies on plugin developers to verify the requesting user's role before executing privileged operations. In delucks-seo versions through 2.6.0, this enforcement is absent or incorrect, allowing privilege boundaries to be crossed.
Attack Vector
The attack vector is network-based and requires only low-level authenticated access. An attacker who obtains or registers a low-privilege account, such as a subscriber on a site with open registration, sends a crafted HTTP request to a vulnerable plugin endpoint. The server processes the request without verifying the user's authorization, granting elevated privileges or executing administrative actions on the attacker's behalf. No social engineering or victim interaction is required.
For detailed technical exploitation specifics, refer to the Patchstack WordPress Plugin Advisory.
Detection Methods for CVE-2025-48165
Indicators of Compromise
- Unexpected promotion of low-privilege accounts (subscribers, contributors) to editor or administrator roles
- Newly created administrator accounts without a corresponding admin-initiated action in the WordPress audit log
- Modifications to wp_options, wp_usermeta, or DELUCKS SEO plugin settings originating from non-admin user sessions
- Outbound requests from the WordPress host to unfamiliar domains following plugin-related HTTP POST activity
Detection Strategies
- Audit the wp_usermeta table for unexpected wp_capabilities values assigned to low-privilege users
- Review WordPress access logs for POST requests to delucks-seo plugin endpoints made by non-administrator accounts
- Correlate authentication events with subsequent administrative actions to identify role changes outside normal workflows
- Deploy file integrity monitoring on wp-content/plugins/delucks-seo/ to detect tampering
Monitoring Recommendations
- Enable WordPress activity logging to record role changes, user creation, and plugin configuration updates
- Forward web server access logs and WordPress audit events to a centralized SIEM for correlation and alerting
- Alert on any HTTP request to plugin admin-ajax actions originating from sessions with non-admin cookies
- Track plugin version inventory across WordPress estates to identify hosts running delucks-seo2.6.0 or earlier
How to Mitigate CVE-2025-48165
Immediate Actions Required
- Identify all WordPress sites running the DELUCKS SEO plugin and confirm installed versions
- Deactivate and remove delucks-seo versions through 2.6.0 until a patched release is verified
- Audit existing user accounts and remove any unauthorized administrator or editor privileges
- Force password resets for all accounts on affected sites and rotate any API keys or secrets stored in WordPress
Patch Information
At the time of publication, the advisory indicates the vulnerability affects DELUCKS SEO versions from n/a through 2.6.0. Site administrators should monitor the Patchstack WordPress Plugin Advisory and the official plugin repository for an updated, patched release and upgrade immediately when available.
Workarounds
- Disable the DELUCKS SEO plugin entirely until a security update is published
- Restrict user registration and require manual approval for new accounts to reduce the pool of potential attackers
- Apply a web application firewall (WAF) rule to block requests to known vulnerable delucks-seo endpoints from non-administrator sessions
- Enforce the principle of least privilege across all WordPress roles and remove dormant low-privilege accounts
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
