CVE-2026-19410 Google Cloud Build Comment Control Bypass via Webhook Suppression
Remote attackers can execute unreviewed code in Google Cloud Build environments by bypassing comment controls via webhook suppression.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-19410?
CVE-2026-19410 is a critical missing authorization vulnerability in Google Cloud Build, published on 31 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An Incorrect Authorization vulnerability in GitHub Trigger Comment Control in Google Cloud Build prior to 2026-06-24 on Google Cloud Platform allows a remote attacker to execute unreviewed code in the build environment using webhook suppression.
This vulnerability was patched on 24 June 2026, and no customer action is needed.
Which versions are affected by CVE-2026-19410?
How do I fix CVE-2026-19410?
No fix has been published for CVE-2026-19410 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-2026-19410 being exploited?
There is no known exploitation of CVE-2026-19410 in the wild and no public exploit code.
Sources
Also known as GHSA-q4ww-hvh7-426w.