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CVE-2021-4458 is a SQL injection vulnerability in the Modern Events Calendar Lite plugin for WordPress. In all versions up to and including 6.3.0, the plugin's wp_ajax_mec_load_single_page AJAX action fails to properly sanitize and safely prepare the user-controlled 'id' parameter before incorporating it into an SQL query. Because of insufficient escaping and lack of adequate use of prepared statements, an unauthenticated attacker can inject arbitrary SQL fragments into an existing query. According to the provided information, exploitation can be used to extract sensitive information from the backend database. The issue is only exploitable on sites where addslashes is disabled.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.