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CVE-2026-29202 is an improper input validation vulnerability in cPanel & WHM and WP Squared affecting the create_user API path. The flaw resides in insufficient validation of the plugin parameter supplied to the create_user functionality, allowing attacker-controlled input to be interpreted as Perl code. A successfully authenticated attacker can trigger arbitrary Perl code execution in the security context of the associated account’s system user. In shared hosting environments, this creates a practical post-authentication code-execution primitive that can be used for file operations, persistence, and follow-on privilege-escalation activity.
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No public exploit code observed for this vulnerability.
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30 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A cPanel/WHM vulnerability caused by insufficient input validation in the plugin parameter of the create_user API call, allowing arbitrary Perl code execution as the authenticated account's system user.
A high-severity Perl code injection vulnerability in cPanel & WHM that allows an authenticated user to execute arbitrary Perl code via the create_user API call.
A critical improper validation flaw in the cPanel & WHM create_user API that could allow authenticated attackers to execute arbitrary Perl code with the privileges of the affected account.
A Perl code injection vulnerability in the cPanel create_user API call that can lead to remote code execution and potential full server compromise.
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.