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CVE-2026-15303 is a critical authentication bypass vulnerability in the 6Storage Rentals plugin for WordPress affecting versions up to and including 2.27.0. The flaw is caused by the six_storage_create_wp_user() AJAX handler being exposed through the unauthenticated wp_ajax_nopriv_six_storage_create_wp_user action without nonce validation, capability checks, credential verification, or ownership validation. The vulnerable code resolves a WordPress account from an attacker-supplied email address and then invokes wp_set_current_user() and wp_set_auth_cookie() for that account. As a result, a remote unauthenticated attacker can establish an authenticated session as any existing WordPress user, including an administrator, by supplying that user’s email address.
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No public exploit code observed for this vulnerability.
5 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.