Allows authenticated attackers to escalate privileges and take over Google Cloud Projects — impacts widely used cloud infrastructure across organizations.
CVE-2026-4644
Auth bypass in Google Cloud Integration Connectors enables project takeover via service-account attachment.
Is CVE-2026-4644 being exploited?
Not confirmed. CVE-2026-4644 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. EPSS currently estimates a 0.23% probability of exploitation in the next 30 days.
How severe is CVE-2026-4644?
CVE-2026-4644 is rated High with a CVSS score of 8.5. 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-2026-4644?
Yes. A fix has been recorded for CVE-2026-4644. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-4644 affect?
CVE-2026-4644 affects Google Cloud Integration Connectors (<2025-12-11), Google Cloud Platform projects (service-account attachment flow). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-4644?
Upgrade Connectors to 2025-12-11 or later and validate service-account bindings.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated user can attach unauthorized service accounts to escalate privileges and take over Google Cloud Projects.
Immediate action required
- affected< 2025-12-11
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.