CVE-2026-12879 PUBLISHED

Cross-Tenant Data Exfiltration in Apigee via BigQuery Confused Deputy

Assigner: GoogleCloud
Reserved: 22.06.2026 Published: 09.07.2026 Updated: 09.07.2026

An Improper Input Validation vulnerability in BigQuery DAO in Google Cloud Apigee versions prior to 2026-06-12 on Google Cloud Platform allows an authenticated attacker to exfiltrate cross-tenant data.

This vulnerability was patched on 12 June 2026 on the Apigee Servers, and no customer action is needed.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L/U:Clear
CVSS Score: 5.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	Low
Attack Complexity	High	Integrity	None	Integrity	Low
Attack Requirements	None	Availability	None	Availability	Low
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	Google Cloud
Product	Apigee
Versions	Default: unaffected affected from 0 to 2026-06-12 (excl.)

Credits

Moshe Bernstein with Tenable reporter

References

https://cloud.google.com/apigee/docs/release-notes#July_08_2026

Problem Types

CWE-610 Externally Controlled Reference to a Resource in Another Sphere CWE
CWE-441 Unintended Proxy or Intermediary ('Confused Deputy') CWE

Impacts

CAPEC-465 Transparent Proxy Abuse