Author: Ameeba

Overview

A significant vulnerability, designated as CVE-2025-3607, has been identified in the Frontend Login and Registration Blocks plugin for WordPress. This vulnerability poses a substantial threat to the security of WordPress websites, which are used by a vast number of businesses and individuals worldwide. The flaw’s severity results from its potential to enable an attacker to escalate their privileges by taking over user accounts, even those of administrators. If exploited, this vulnerability could lead to system compromise or data leakage, making it a critical issue that requires immediate attention and remediation.

Vulnerability Summary

CVE ID: CVE-2025-3607
Severity: High (8.8 CVSS Severity Score)
Attack Vector: Network
Privileges Required: Low (Subscriber-level access)
User Interaction: Required
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Frontend Login and Registration Blocks plugin for WordPress | All versions up to and including 1.0.7

How the Exploit Works

The vulnerability arises from the plugin’s failure to adequately validate a user’s identity prior to updating a password. This flaw allows an attacker, who has gained at least Subscriber-level access, to change the password of any user, even those with administrative privileges. The attacker can then leverage this ability to gain unauthorized access to the affected account, potentially compromising the system or leaking sensitive data.

Conceptual Example Code

The following is a conceptual example of how the vulnerability might be exploited. It is pseudocode and should not be taken as an actual exploit script.

POST /wp-login.php?action=lostpassword HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
user_login=target_admin&redirect_to=&wp-submit=Get+New+Password

In the above example, the attacker sends a password reset request for the `target_admin` user. Due to the lack of proper identity verification, the system processes this request, enabling the attacker to reset the password and gain access to the `target_admin` account.

Available Mitigations

To mitigate this vulnerability, users are advised to immediately apply the patch provided by the vendor. If a patch is not immediately available or cannot be applied in a timely manner, a web application firewall (WAF) or intrusion detection system (IDS) can serve as temporary mitigation, helping to identify and block potential exploit attempts.

Overview

The Common Vulnerabilities and Exposures (CVE) system has recently identified a severe vulnerability, CVE-2025-3604, which exposes WordPress websites using the Flynax Bridge plugin to significant risk. This plugin, widely used for integrating WordPress with the Flynax Classifieds Software, has a critical loophole that could potentially allow an unauthenticated attacker to take over any user account, including those with administrative privileges.
The vulnerability is particularly dangerous because it does not require any special user privileges or interaction, making every WordPress site running an affected version of this plugin a potential target. The impact of a successful exploit could be devastating, leading to system compromise, and unauthorized data access.

Vulnerability Summary

CVE ID: CVE-2025-3604
Severity: Critical (9.8 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise, potential data leakage

Affected Products

Product | Affected Versions

Flynax Bridge Plugin for WordPress | All versions up to and including 2.2.0

How the Exploit Works

The Flynax Bridge plugin for WordPress fails to properly validate a user’s identity before allowing changes to their account details, such as their email address. This means an unauthenticated attacker could manipulate the system, altering arbitrary user’s email addresses, including those of administrators. By doing so, they could then initiate a password reset, which would be sent to the newly assigned email, thus gaining unauthorized access to the account.

Conceptual Example Code

Here’s a conceptual example of how an HTTP request exploiting this vulnerability might look:

POST /wp-json/flynax/v1/changeEmail HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"user_id": 1,
"new_email": "attacker@example.com"
}

In this example, the attacker sends a POST request to the changeEmail endpoint of the Flynax Bridge plugin’s API. They specify the user_id of the account they wish to take over (in this case, 1 for the admin account) and their own email address as the new_email. The server then changes the email address of the specified account without properly verifying the requester’s identity, allowing the attacker to reset the password and gain access.

Mitigation and Prevention

The safest and most effective solution to this vulnerability is applying the vendor-supplied patch. Users should immediately update their Flynax Bridge plugin to version 2.2.1 or later. As a temporary mitigation, users can also use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to filter out malicious requests attempting to exploit this vulnerability. However, this should not be considered a long-term solution as it can only minimize the risk, not eliminate it.
Remember, regular software updates are an integral part of maintaining a secure online presence.

Overview

The vulnerability we’re discussing today, CVE-2025-3603, is a significant risk to any organization using the Flynax Bridge plugin for WordPress, specifically versions up to and including 2.2.0. It’s a privilege escalation vulnerability that allows potential hackers to take over user accounts, even those of administrators. This vulnerability matters because it can lead to severe consequences like unauthorized access to sensitive data, system compromise, and possible data leakage, which could cause serious reputational damage and financial loss.

Vulnerability Summary

CVE ID: CVE-2025-3603
Severity: Critical (9.8/10)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise, data leakage

Affected Products

Product | Affected Versions

Flynax Bridge Plugin for WordPress | All versions up to and including 2.2.0

How the Exploit Works

The crux of this exploit lies in the plugin’s flawed identity validation process. When a user attempts to update their account details, including their password, the plugin does not properly verify the user’s identity. This flaw allows an attacker, even without authentication, to change any user’s password, including administrators’ passwords. Once the password is changed, the attacker can then use these new credentials to gain access to the user’s account, compromising the system, and potentially leading to data leakage.

Conceptual Example Code

Here, we provide a conceptual example of how an attacker might exploit this vulnerability, essentially by sending a POST request with the malicious payload to the vulnerable endpoint:

POST /wp-json/flynax/v1/updateUser HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"username": "admin",
"new_password": "attacker_password"
}

In this example, the attacker attempts to change the password of the “admin” account to “attacker_password. If successful, the attacker would then have full administrative access to the WordPress site.

Mitigation

To mitigate this vulnerability, users should apply the vendor-provided patch immediately. If you can’t apply the patch right away, consider using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation strategy. However, these options only lower the risk and cannot fully eliminate it. The only complete solution is to update the Flynax Bridge plugin for WordPress to a patched version.

Overview

The CVE-2025-3101 vulnerability poses a significant risk to all users of the Configurator Theme Core plugin for WordPress. This exploit allows authenticated attackers, even those with the most basic Subscriber-level access, to escalate their privileges to Administrator. Any website using all versions up to and including 1.4.7 of the plugin is at risk. The implications of an attacker gaining Administrator privileges on a website are enormous, potentially leading to system compromise or extensive data leakage.

Vulnerability Summary

CVE ID: CVE-2025-3101
Severity: High (8.8 CVSS)
Attack Vector: Network
Privileges Required: Low (Subscriber-level access)
User Interaction: None
Impact: System compromise or data leakage

Affected Products

Product | Affected Versions

Configurator Theme Core plugin for WordPress | Up to and including 1.4.7

How the Exploit Works

The CVE-2025-3101 vulnerability stems from the failure of the Configurator Theme Core plugin to properly validate user meta fields before updating them in the database. An attacker with at least Subscriber-level access can manipulate these fields and thereby escalate their privileges to the Administrator level. This privilege escalation can grant the attacker full control over the WordPress site, potentially leading to system compromise or data leakage.

Conceptual Example Code

The following is a conceptual example of how an authenticated attacker with Subscriber-level access might exploit this vulnerability, sending a malicious HTTP POST request to a vulnerable endpoint:

POST /wp-json/configurator-theme-core/v1/update-user-meta HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"meta_key": "wp_capabilities",
"meta_value": "a:1:{s:13:\"administrator\";b:1;}"
}

In this example, the attacker is updating the `wp_capabilities` meta field, essentially assigning themselves the “administrator” role on the WordPress site.

Mitigation

To counter this vulnerability, users are advised to apply the vendor patch as soon as it becomes available. In the meantime, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can offer temporary mitigation. These systems can help detect and block suspicious activity, potentially preventing successful exploitation of the vulnerability.

Overview

CVE-2025-3058 is a critical vulnerability found in the Xelion Webchat plugin for WordPress versions up to and including 9.1.0. This cybersecurity flaw exposes WordPress sites to severe threats, allowing unauthorized modification of data, leading to a potential privilege escalation. This vulnerability is significant because it affects a popular WordPress plugin, placing numerous websites and their users at risk. If exploited, attackers could gain unauthorized administrative access, leading to potential system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-3058
Severity: High (8.8 CVSS score)
Attack Vector: Network
Privileges Required: Low (Subscriber-level access and above)
User Interaction: None
Impact: Unauthorized modification of data, privilege escalation, potential system compromise or data leakage

Affected Products

Product | Affected Versions

Xelion Webchat for WordPress | Up to and including 9.1.0

How the Exploit Works

The exploit works by taking advantage of a missing capability check on the xwc_save_settings() function in the Xelion Webchat plugin. Attackers, even with just a Subscriber-level access, can manipulate this function to update arbitrary options on the WordPress site. By updating the default role for registration to administrator and enabling user registration, attackers can register themselves as administrators, gaining full access to the website’s functionalities and sensitive data.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited using an HTTP request:

POST /wp-admin/admin-ajax.php HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
action=xwc_save_settings&settings[default_role]=administrator&settings[user_registration]=1

In this request, the `action` parameter is set to `xwc_save_settings`, the function that is missing a capability check. The `settings` parameters are used to change the default role to administrator (`settings[default_role]=administrator`) and enable user registration (`settings[user_registration]=1`).

Mitigation Guidance

While the vendor prepares a patch to address this vulnerability, a few temporary mitigations can be applied. Deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help monitor and block suspicious activities. It’s also advised to limit user registration and disable the Xelion Webchat plugin until a patch is available.