CVE-2026-18391
The WooCommerce Subscriptions WordPress plugin before 9.1.0 does not validate user input before unserializing it on stores with High-Perform
CVSS
9.8
Critical
EPSS
—
KEV
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Exploit Today
0
0-100
Published: Aug 12, 2026 · Last modified: Aug 12, 2026 · CWE-434
Not enough EPSS history yet.
The WooCommerce Subscriptions WordPress plugin before 9.1.0 does not validate user input before unserializing it on stores with High-Performance Order Storage enabled, leading to a PHP Object Injection issue which unauthenticated users can escalate to Remote Code Execution via a gadget chain present in the bundled dependencies.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-659396.8 MED—
———In WhatsUp Gold versions released before 2026.0.2, a privileged attacker can create a LogToFile action specifying an arbitrary file extension within the IIS web root.8hCVE-2026-150399.8 CRI—
——0The giftware WordPress plugin before 4.2.10 does not validate the type of uploaded files in one of its upload paths, allowing unauthenticated users to upload arbitrary files, including PHP code, which can lead to remote code execution.6hCVE-2026-556768.8 HIG—
——0Malcolm is a network traffic analysis tool suite. The file-upload component (FilePond PHP backend) accepts uploads at `POST /server/php/submit.php` and stores them in a directory served by the same nginx and php-fpm instance. The allow-list that should restrict accepted file types is an empty array by default (`file-upload/php/config.php:16`), so the type check is a no-op and every extension is accepted. The filename sanitizer keeps the `.php` extension intact. Committed files land in `/var/www/upload/server/php/files` (`file-upload/php/config.php:7`), and the component's nginx routes any URL ending in `.php` to php-fpm. An authenticated `GET /server/php/files/<name>.php` then executes the uploaded code as `www-data`. Prior to version 26.06.1, in RBAC mode, the upload endpoint is reachable by the granular `ROLE_UPLOAD` role (`nginx/lua/nginx_auth_helpers.lua:71`), a role intended only for submitting capture files. As a result, a user holding the upload-only role runs arbitrary PHP as `www-data` inside the file-upload container. Version 26.06.1 fixes the issue.3hCVE-2026-134577.5 HIG—
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——0n8n versions before 1.123.67, 2.31.5, and 2.32.1 contain an arbitrary file write vulnerability in the Edit Image node, which passes its output format parameter to the underlying image library without validation. An authenticated user able to run workflows can supply a crafted format value to write arbitrary files outside the node's working directory on the n8n instance.1dCVE-2026-725578.8 HIG—
——0An unrestricted file upload vulnerability in Cockpit CMS 2.6.0 allows authenticated users to upload files of any extension including PHP scripts via the asset upload endpoint. The allowed_uploads configuration defaults to wildcard (*) and uploaded files are stored in a web-accessible directory. An attacker with any authenticated account can upload a PHP webshell and execute arbitrary OS commands on the server.1d