On 28 April 2026, cPanel released an urgent security update for all currently supported versions of cPanel & WHM, addressing a vulnerability related to authentication pathways within the control panel software.
What was the issue?
cPanel identified a security issue affecting all supported versions of cPanel & WHM, specifically linked to certain authentication paths within the software. Due to the elevated access control panels provide, this type of issue is treated as critical.
Which versions were affected?
The vulnerability impacts all supported versions, with patched builds released across multiple branches including 11.110, 11.118, 11.126, 11.132, 11.134, and 11.136.
Was customer data affected?
There is no evidence of data compromise. This was a preventative security update, not a breach notification.
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