In plain language
What this advisory means
A security flaw was discovered in Google Cloud's Application Integration JavaScript Task, where an authenticated user with standard permissions could run harmful code on shared production servers. Google fixed this issue on June 28, 2026, and no action is required from customers.
Technical explanation
How the issue affects the environment
The vulnerability involves deserialization of untrusted data in the JavaScript Task component of Google Cloud's Application Integration. This flaw allowed an authenticated user with standard permissions to execute arbitrary code via a specially crafted script. This code execution occurred on the shared production servers, posing a critical risk to the cloud environment's integrity and security. Google patched the vulnerability on June 28, 2026, preventing exploitation through this attack vector.
Operational impact
Why teams should care
If exploited, this vulnerability could allow attackers to run unauthorized code on shared production servers, potentially leading to data compromise, service disruption, and loss of trust in Google Cloud services. However, because Google has already patched this issue, the risk to customers is mitigated with no required customer action.
Immediate action
Google has patched the vulnerability as of June 28, 2026. Customers do not need to take any action as the fix is applied on the server side within Google Cloud's infrastructure.
Affected and fixed releases
Temporary risk reduction
No customer action or workaround is required or provided, as the issue is fully mitigated by Google's patch.
Evidence and validation checklist
- Security bulletin published by Google Cloud on 2026-09-28.
- Vulnerability patched on June 28, 2026.
- Description of authenticated users with standard permissions able to execute arbitrary code.
- CVE assigned: CVE-2026-81867.
Authoritative reference
Google Cloud Security Bulletins
QCS detected and normalized this record from the official source. Vendor guidance remains authoritative.