CVE-2021-24307

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

The All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings before 4.1.0.2 enables authenticated users with "aioseo_tools_settings" privilege (most of the time admin) to execute arbitrary code on the underlying host. Users can restore plugin's configuration by uploading a backup .ini file in the section "Tool > Import/Export". However, the plugin attempts to unserialize values of the .ini file. Moreover, the plugin embeds Monolog library which can be used to craft a gadget chain and thus trigger system command execution.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-502

Affected software

No affected versions have been published.

Timeline

Published: May 24, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-243085.4The 'State' field of the Edit profile page of the LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordP CVE-2021-243095.4The "Schedule Name" input in the Weekly Schedule WordPress plugin before 3.4.3 general options did not properly sanitize input, allowing a u CVE-2021-24317.5Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Filters). The supported version CVE-2021-243104.8The Photo Gallery by 10Web - Mobile-Friendly Image Gallery WordPress plugin before 1.5.67 did not properly sanitise the gallery title, allow CVE-2021-243118.8The wp_ajax_upload-remote-file AJAX action of the External Media WordPress plugin before 1.0.34 was vulnerable to arbitrary file uploads via CVE-2021-243127.2The parameters $cache_path, $wp_cache_debug_ip, $wp_super_cache_front_page_text, $cache_scheduled_time, $cached_direct_pages used in the set CVE-2021-243135.4The WP Prayer WordPress plugin before 1.6.2 provides the functionality to store requested prayers/praises and list them on a WordPress websi CVE-2021-243149.8The Goto WordPress theme before 2.1 did not sanitise, validate of escape the keywords GET parameter from its listing page before using it in CVE-2021-243154.8The GiveWP – Donation Plugin and Fundraising Platform WordPress plugin before 2.10.4 did not sanitise or escape the Background Image field o CVE-2021-243166.1The search feature of the Mediumish WordPress theme through 1.0.47 does not properly sanitise it's 's' GET parameter before output it back t CVE-2021-243176.1The Listeo WordPress theme before 1.6.11 did not properly sanitise some parameters in its Search, Booking Confirmation and Personal Message CVE-2021-243186.5The Listeo WordPress theme before 1.6.11 did not ensure that the Post/Page and Booking to delete belong to the user making the request, allo