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10/8/25, 3:33 PM Red Hat Confirms Security Breach in Self-Hosted GitLab Instance, Customer Data Exposed - CPO Magazine

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CYBER SECURITY NEWS · 2 MIN READ

Red Hat Confirms Security Breach in Self-Hosted GitLab Instance,

Customer Data Exposed

ALICIA HOPE · OCTOBER 7, 2025

Open-source software company Red Hat has confirmed a security breach on one of
its GitLab instances after a threat actor claimed to have stolen nearly 570 GB of

data from across various repositories.

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“We recently detected unauthorized access to a GitLab instance used for

internal Red Hat Consulting collaboration in select engagements,” the company
stated .

Upon detecting the breach, Red Hat responded by isolating the breached GitLab

instance, launching an investigation, terminating the threat actor’s access, and

notifying the relevant authorities.

https://www.cpomagazine.com/cyber-security/red-hat-confirms-security-breach-in-self-hosted-gitlab-instance-customer-data-exposed/ 1/7