CVE-2026-81867 Deserialization of Untrusted Data in Application Integration allows Remote Code Execution
An authenticated user can execute arbitrary code on shared servers via deserialization in JavaScript Tasks, requiring a patch.
- 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-2026-81867?
CVE-2026-81867 is a critical unsafe deserialization vulnerability in Google Cloud Application Integration, published on 28 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A Deserialization of Untrusted Data vulnerability in the JavaScript Task in Google Cloud Application Integration versions prior to 2026-06-28 on Google Cloud Platform allows an authenticated user with standard permissions to run arbitrary code on the shared production servers using a specially crafted script bypassing param guards.
This vulnerability was patched on 28 June 2026, and no customer action is needed.
Weakness: CWE-502
Which versions are affected by CVE-2026-81867?
How do I fix CVE-2026-81867?
No fix has been published for CVE-2026-81867 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-81867 being exploited?
There is no known exploitation of CVE-2026-81867 in the wild and no public exploit code.
Sources
Also known as GHSA-33v3-56q5-h52m.