CVE-2025-26883: Animated Text Block Auth Bypass Vulnerability

CVE-2025-26883 Overview

CVE-2025-26883 is a missing authorization vulnerability in the bPlugins Animated Text Block plugin for WordPress. The flaw affects all versions up to and including 1.0.7. Attackers with low-privileged authenticated access can exploit incorrectly configured access control security levels to perform actions that should be restricted to higher-privileged users. The vulnerability is categorized under CWE-862: Missing Authorization and impacts data confidentiality on affected WordPress installations.

Critical Impact
Authenticated attackers with minimal privileges can access sensitive plugin functionality due to broken access control, leading to unauthorized information disclosure.

Affected Products

bPlugins Animated Text Block plugin for WordPress
All versions from n/a through 1.0.7
WordPress sites with the animated-text-block plugin installed

Discovery Timeline

2025-02-24 - CVE-2025-26883 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-26883

Vulnerability Analysis

The Animated Text Block plugin exposes functionality without properly verifying the requesting user's authorization level. The plugin registers endpoints or actions that check whether a user is authenticated but fail to confirm whether that user has the appropriate role or capability. This gap allows subscriber-level or contributor-level accounts to invoke functionality intended for administrators or editors.

The vulnerability falls within the broken access control category, which remains a common issue in WordPress plugins that rely on is_user_logged_in() checks instead of current_user_can() capability validation. Successful exploitation compromises the confidentiality of data managed by the plugin, though integrity and availability remain unaffected according to the reported impact scope.

Root Cause

The root cause is a missing authorization check [CWE-862] in the plugin's request handlers. The code path does not validate the acting user's WordPress capability before executing privileged operations. Any authenticated user session that can reach the affected endpoint bypasses the intended access control model.

Attack Vector

Exploitation occurs over the network against a WordPress site running the vulnerable plugin. An attacker must first hold a valid low-privileged account on the target site, such as a subscriber account created through open registration. The attacker then issues crafted requests to the plugin's endpoints, which execute without enforcing role-based restrictions. No user interaction from an administrator is required.

Refer to the Patchstack Vulnerability Report for additional technical detail on the affected code paths.

Detection Methods for CVE-2025-26883

Indicators of Compromise

Requests to admin-ajax.php or REST endpoints referencing the animated-text-block plugin from low-privileged user sessions
Unexpected plugin configuration changes or data access events attributed to non-administrative accounts
New or unusual subscriber account registrations followed by plugin-specific API calls

Detection Strategies

Audit WordPress access logs for authenticated requests to plugin endpoints originating from accounts without editor or administrator roles
Compare request user roles against expected capability requirements for plugin actions
Deploy a Web Application Firewall (WAF) rule set that flags authorization anomalies against known WordPress plugin paths

Monitoring Recommendations

Enable WordPress audit logging to capture user role, request URI, and action for all plugin interactions
Monitor for privilege discrepancies where a subscriber account performs actions typically restricted to higher roles
Correlate authentication events with plugin API access to identify credential abuse patterns

How to Mitigate CVE-2025-26883

Immediate Actions Required

Deactivate and remove the Animated Text Block plugin from any WordPress installation running version 1.0.7 or earlier until a patched release is confirmed
Restrict new user registration or set the default role to the lowest privilege level to limit the exploitation surface
Review existing low-privileged accounts for signs of abuse and rotate credentials where suspicious activity is observed

Patch Information

At the time of publication, the vendor advisory indexed on Patchstack lists versions through 1.0.7 as affected. Administrators should consult the Patchstack Vulnerability Report and the plugin's WordPress.org repository page for the latest fixed version and upgrade guidance.

Workarounds

Block access to the plugin's AJAX and REST endpoints at the WAF layer for non-administrative user roles
Disable open user registration on the WordPress site to prevent attackers from obtaining the required authenticated session
Apply the principle of least privilege by auditing and downgrading user roles where administrative capabilities are not required

bash

# Configuration example: disable open registration and enforce least-privilege default role
wp option update users_can_register 0
wp option update default_role subscriber