GitLab EE is widely used; account takeover via Group SAML could disrupt orgs and data access.
CVE-2026-6552
Authenticated group Owner can takeover another member's GitLab account via Group SAML.
Is CVE-2026-6552 being exploited?
Not confirmed. CVE-2026-6552 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-6552?
CVE-2026-6552 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-6552?
Yes. A fix has been recorded for CVE-2026-6552. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-6552 affect?
CVE-2026-6552 affects GitLab Enterprise Edition (EE) v15.5–18.10.7, v18.11.0–18.11.4, v19.0.0–19.0.1. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-6552?
Update to patched EE versions: 18.10.8, 18.11.5, or 19.0.2+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Group Owner can impersonate peers and gain access to other members' GitLab accounts via Group SAML auth, enabling data exposure.
Patch when possible