CVE-2026-109218
CriticalCVSS 9.8Summary
The Contact Manager plugin for WordPress in versions up to and including 9.1.2 is vulnerable to arbitrary file upload via the add_message function. An incomplete extension blacklist allows bypassing validation with a trailing dot, enabling unauthenticated attackers to upload executable files and potentially achieve remote code execution.
Risk Assessment
An attacker could upload a malicious file and achieve code execution on the server, risking full site compromise. This requires an Apache server with PHP module and the attacker retrieving the file before it is removed.
Recommendation
Update the Contact Manager plugin to a version later than 9.1.2 or disable it if no fix is available. Additionally, consider restricting file uploads and monitoring upload directories.
Related vulnerabilities
- CVE-2026-90717Critical
Dell PowerProtect Data Domain Management Center contains an Authentication Bypass by Spoofing vulnerability. A low privileged attacker with remote access could exploit it to elevate privileges, potentially impacting other managed Data Domain systems.
- CVE-2026-86400Critical
Dell PowerProtect Data Domain contains an Improper Authentication vulnerability. An unauthenticated attacker with remote access could exploit it to execute arbitrary commands with root privileges, allowing complete system takeover.
- CVE-2026-86397Critical
Dell PowerProtect Data Domain contains an Improper Authentication vulnerability. An unauthenticated attacker with remote access could exploit it to create a privileged account, leading to complete system takeover.
- CVE-2026-104383Critical
Improper Control of Generation of Code in the Pigeon MFA service in EagleCloud Aquila versions through 2.6.7.2 on on-premises platforms allows authenticated remote attackers to execute arbitrary code via code injection.
- CVE-2026-84999Critical
The Pie Register Premium plugin for WordPress up to and including 3.8.4.0 is vulnerable to unrestricted file type upload via the piereg_file_upload function. File type validation errors are not checked before move_uploaded_file(), and the AJAX handler lacks nonce and capability checks, allowing unauthenticated attackers to upload PHP files and achieve remote code execution.
- CVE-2026-106013Critical
The Jupiter X Core plugin for WordPress (up to and including 4.61.0) is vulnerable to authentication bypass in its Twitter/X social login handler. The verify_twitter_callback function fails to reassign the returned credentials to the TwitterOAuth client, so the subsequent API call remains signed with the site operator's stored token, and the plugin authenticates a WordPress account based solely on the X app owner's email address.
- CVE-2026-110879Critical
A vulnerability in jackson-databind allows bypassing generic-argument validation: only the outer class of a type ID is checked, while attacker-selected classes inside generic arguments are accepted. This enables deserialization of dangerous classes (e.g., HashMap<FileSystemXmlApplicationContext,String>) even with a validator enabled, potentially leading to remote code execution. Affects versions 2.10.0+ and 3.0.0+; it is an incomplete fix for CVE-2026-54512.
- CVE-2026-58256Critical
In GRR prior to version 4.5.0, an administrator can inject malicious PHP through LDAP connector configuration parameters such as `ldap_filter`, poisoning `/personnalisation/config_ldap.inc.php` and enabling remote code execution. The administrator must first successfully connect to an LDAP server, which can be attacker-controlled, and then submit malicious input on the subsequent connector settings page.
- CVE-2026-116692Critical
In MLflow from 3.12.0rc0 until 3.17.0, third-party scorer deserialization in mlflow/genai/scorers/base.py accepts request-selected descendants of allowed modules rather than requiring an exact allowed module. An attacker can place a Python module under a writable allowed package and invoke it via /ajax-api/3.0/mlflow/scorer/invoke, leading to code execution. Version 3.17.0 fixes the issue.
- CVE-2026-112352Critical
Sunhillo SureLine before 9.1.5 contains an authentication bypass vulnerability that allows an unauthenticated remote attacker to impersonate any user with an active web session by forging a session cookie containing only a cleartext username with no random identifier or integrity protection. Attackers can guess default account names such as Admin or sftp_user and submit a forged username cookie to satisfy the login check in checkLogin (libwebcmn.so) and networkDiag.cgi, chaining into root command execution.
Original NVD description (English source)
The Contact Manager plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 9.1.2 via the add_message function. This is due to an incomplete extension blacklist that fails to detect dangerous extensions when a trailing dot causes the extension-derivation routine to return an empty string, which sanitize_file_name() then silently removes before the file is written to disk. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. Successful code execution additionally requires the server to use Apache with libapache2-mod-php (which maps .phar to PHP by default) and the attacker to retrieve the uploaded file within the brief window before it is removed by unlink() at end of request.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

