CVE-2026-4644 Improper Authorization in Google Cloud Integration Connectors Leads to Project Takeover
An authenticated user can escalate privileges and take over a Google Cloud Project via unauthorized service account attachment in Integration Connectors.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4644?
CVE-2026-4644 is a high-severity missing authorization vulnerability in Google Cloud Integration Connectors, published on 4 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A Missing Authorization vulnerability in HTTP Connector in Google Cloud Integration Connectors versions prior to 2025-12-11 on Google Cloud Platform allows an authenticated user to escalate privileges and take over a Google Cloud Project using unauthorized service account attachment.
This vulnerability was patched on 11 December 2025, and no customer action is needed.
Weakness: CWE-863
Which versions are affected by CVE-2026-4644?
How do I fix CVE-2026-4644?
No fix has been published for CVE-2026-4644 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4644 being exploited?
There is no known exploitation of CVE-2026-4644 in the wild and no public exploit code.
Sources
Also known as GHSA-vwm5-6ggm-73px.