CVE-2026-8934 Cross-Project Information Leakage in Google App Engine UI
Unauthenticated attackers can leak sensitive App Engine request logs from other projects via a GraphQL API flaw in the Cloud Console.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8934?
CVE-2026-8934 is a medium-severity missing authorization vulnerability in Google Cloud Cloud Console UIs, published on 22 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A Missing Authorization vulnerability in a GraphQL private API operation of the Google App Engine section of the Cloud Console allows an unauthenticated remote attacker to leak sensitive App Engine request logs from other projects using a specially crafted request.
This vulnerability was patched on 7 April 2026, and no customer action is needed.
Weakness: CWE-862
Which versions are affected by CVE-2026-8934?
How do I fix CVE-2026-8934?
No fix has been published for CVE-2026-8934 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-2026-8934 being exploited?
There is no known exploitation of CVE-2026-8934 in the wild and no public exploit code.
Sources
Also known as GHSA-5xr4-qrm5-m2w8.