CVE-2025-48139 Overview
CVE-2025-48139 is a Missing Authorization vulnerability [CWE-862] affecting the StyleAI WordPress plugin by relentlo (relentlosoftware). The flaw allows unauthenticated network attackers to access functionality that is not properly constrained by Access Control Lists (ACLs). All versions of StyleAI through 1.0.4 are affected. Successful exploitation impacts confidentiality and integrity at a limited level, without direct availability impact. The vulnerability was published to the National Vulnerability Database (NVD) on June 9, 2025.
Critical Impact
Unauthenticated attackers can invoke plugin functionality that should be restricted, resulting in limited disclosure and modification of data managed by the StyleAI plugin.
Affected Products
- relentlo StyleAI WordPress plugin (relentlosoftware)
- StyleAI versions from n/a through 1.0.4
- WordPress sites with StyleAI installed and activated
Discovery Timeline
- 2025-06-09 - CVE-2025-48139 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-48139
Vulnerability Analysis
The StyleAI plugin exposes one or more actions that lack proper authorization checks. Under CWE-862 Missing Authorization, the application does not verify whether the requesting user is permitted to perform the requested operation. Because the attack is reachable over the network with no privileges or user interaction required, any unauthenticated visitor can invoke the affected endpoints. The confidentiality and integrity effects are limited in scope, and availability is not impacted according to the published CVSS vector.
Root Cause
The root cause is the absence of capability or nonce checks on plugin handlers that should be restricted to privileged roles. In WordPress plugins, this typically occurs when AJAX actions, REST routes, or admin-post handlers omit current_user_can() verification and check_ajax_referer() or wp_verify_nonce() calls. Without these guards, the plugin implicitly trusts the request context.
Attack Vector
An attacker sends crafted HTTP requests directly to the exposed plugin endpoints on a target WordPress site. Because authentication is not required, the attacker can automate broad scanning and mass exploitation against WordPress sites running StyleAI <= 1.0.4. The impact is limited to functionality and data exposed by the plugin, but attackers may chain the access with other WordPress weaknesses. Refer to the Patchstack advisory for further details.
No public proof-of-concept or exploit code has been verified for this vulnerability at the time of publication.
Detection Methods for CVE-2025-48139
Indicators of Compromise
- Unauthenticated HTTP POST or GET requests to StyleAI plugin paths under /wp-content/plugins/relentlosoftware/ or /wp-admin/admin-ajax.php referencing StyleAI actions.
- Unexpected changes to StyleAI plugin settings or generated content without a corresponding administrator session in the WordPress audit log.
- Requests originating from anonymous or previously unseen IP addresses hitting StyleAI endpoints in bursts.
Detection Strategies
- Monitor WordPress access logs for high-frequency requests to StyleAI plugin endpoints from unauthenticated clients.
- Deploy a Web Application Firewall (WAF) rule set that flags requests to StyleAI action names originating without a valid authenticated session cookie.
- Correlate plugin option changes in the wp_options table with the absence of corresponding admin login events.
Monitoring Recommendations
- Enable verbose logging on the WordPress site and ship logs to a centralized SIEM for correlation and retention.
- Alert on anomalies in admin-ajax.php traffic volume and on any 200 responses to unauthenticated requests to plugin handlers.
- Track plugin version inventory across managed WordPress sites to identify hosts still running StyleAI <= 1.0.4.
How to Mitigate CVE-2025-48139
Immediate Actions Required
- Identify all WordPress instances running the StyleAI plugin and inventory installed versions.
- Deactivate and remove StyleAI on any site running version 1.0.4 or earlier until a fixed release is confirmed by the vendor.
- Restrict access to /wp-admin/admin-ajax.php and REST endpoints associated with StyleAI at the WAF or reverse-proxy layer.
Patch Information
At the time of publication, no patched version beyond 1.0.4 is referenced in the NVD entry. Site owners should monitor the Patchstack advisory for StyleAI and the plugin's WordPress.org page for an official fix, and apply it as soon as it becomes available.
Workarounds
- Uninstall the StyleAI plugin until a vendor-supplied fix that adds proper capability and nonce checks is published.
- Apply virtual patching through a WAF to block unauthenticated requests targeting StyleAI action names and REST routes.
- Enforce least privilege on WordPress roles and audit which plugins expose AJAX or REST endpoints without authentication requirements.
# Example WAF rule concept to block unauthenticated StyleAI plugin requests
# (adapt to your WAF syntax: ModSecurity, Cloudflare, AWS WAF, etc.)
# Deny requests to admin-ajax.php with StyleAI action names when no valid auth cookie is present
SecRule REQUEST_URI "@contains /wp-admin/admin-ajax.php" \
"chain,deny,status:403,id:1004813901,msg:'Block unauthenticated StyleAI action'"
SecRule ARGS:action "@rx (?i)styleai" "chain"
SecRule &REQUEST_COOKIES:wordpress_logged_in_.* "@eq 0"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
