CVE-2025-48271: Leadinfo Authorization Bypass Vulnerability

CVE-2025-48271 Overview

CVE-2025-48271 is a Missing Authorization vulnerability in the Leadinfo WordPress plugin. The issue affects all versions up to and including 1.1. The flaw stems from incorrectly configured access control security levels, allowing unauthenticated attackers to modify plugin settings over the network without any user interaction.

The vulnerability is categorized under [CWE-862: Missing Authorization]. An attacker can send crafted HTTP requests to affected endpoints and alter configuration state that should be restricted to authorized administrators.

Critical Impact
Unauthenticated network attackers can change Leadinfo plugin settings on affected WordPress sites, resulting in limited integrity and availability impact on the plugin's configuration and behavior.

Affected Products

Leadinfo WordPress plugin versions up to and including 1.1
WordPress sites with the Leadinfo integration enabled
All hosting environments running the vulnerable plugin build

Discovery Timeline

2025-05-23 - CVE-2025-48271 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-48271

Vulnerability Analysis

The Leadinfo plugin exposes settings-modification functionality without enforcing an authorization check on the requester. The plugin fails to verify the user's capability or role before processing settings-change requests. As a result, requests originating from unauthenticated sources are handled identically to those from privileged administrators.

The vulnerability is network-reachable and requires no privileges or user interaction. According to the Patchstack Vulnerability Advisory, the flaw allows attackers to change plugin settings. The EPSS probability is 0.25%.

Root Cause

The root cause is a missing authorization check [CWE-862] on one or more plugin action handlers. WordPress plugins typically enforce access control through current_user_can() capability checks and nonce validation via check_admin_referer() or wp_verify_nonce(). In vulnerable Leadinfo builds, these controls are absent or improperly configured on settings endpoints.

Attack Vector

An attacker sends an HTTP request directly to the vulnerable plugin endpoint on a target WordPress site. Because the handler does not validate the caller's identity or capability, the request proceeds and mutates the plugin's stored options. No credentials, session tokens, or user interaction are required. The attack is remote and can be automated across WordPress sites indexed by search engines or vulnerability scanners.

Refer to the Patchstack Vulnerability Advisory for endpoint-specific details.

Detection Methods for CVE-2025-48271

Indicators of Compromise

Unexpected changes to Leadinfo plugin options stored in the wp_options table
HTTP POST requests to Leadinfo admin-ajax.php or REST endpoints from unauthenticated sessions
WordPress audit log entries showing settings mutations without a corresponding administrator login

Detection Strategies

Monitor web access logs for anonymous POST requests targeting Leadinfo plugin action names or REST routes
Compare current Leadinfo plugin option values against a known-good baseline on a scheduled interval
Deploy a WordPress plugin auditing tool or Web Application Firewall (WAF) rule that flags unauthenticated settings-change attempts

Monitoring Recommendations

Enable WordPress activity logging with alerts on option updates for the leadinfo_* option keys
Correlate outbound traffic changes with plugin configuration modifications to identify attacker-controlled endpoints
Track plugin version inventory across all managed WordPress sites and alert on installations at version 1.1 or earlier

How to Mitigate CVE-2025-48271

Immediate Actions Required

Update the Leadinfo plugin to a version later than 1.1 as soon as the vendor publishes a fixed release
Audit current Leadinfo plugin settings for unauthorized modifications and restore known-good values
Restrict administrative access to /wp-admin/ via IP allowlisting where operationally feasible

Patch Information

Consult the Patchstack Vulnerability Advisory for the current patch status and any vendor-issued fixed version. Sites unable to upgrade immediately should deploy virtual patching through a WAF that blocks unauthenticated requests to the vulnerable endpoints.

Workarounds

Deactivate and remove the Leadinfo plugin until a patched version is available and verified
Add WAF rules that require an authenticated administrator session for any request targeting the plugin's admin-ajax.php actions or REST routes
Apply least-privilege review to all installed plugins and remove unused integrations to reduce attack surface

bash

# Configuration example: disable the vulnerable plugin via WP-CLI
wp plugin deactivate leadinfo
wp plugin delete leadinfo

# Verify removal
wp plugin list --status=active | grep -i leadinfo