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CVE-2023-2437 is an authentication bypass vulnerability in the UserPro plugin for WordPress affecting versions up to and including 5.1.1. The flaw is caused by insufficient verification of the user identity supplied during the plugin's Facebook login flow. Because the plugin does not adequately validate that the supplied Facebook-linked identity actually corresponds to the legitimate account owner, an unauthenticated attacker can authenticate as an existing site user if the attacker can provide that user's email address. This can include high-privilege accounts such as administrators. The issue is particularly dangerous when combined with other vulnerabilities that disclose user email addresses, enabling reliable account takeover.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.