CVE-2026-12715 PUBLISHED

Missing Authorization in Firebase Studio allows Cross-Tenant Source Code Theft

Assigner: GoogleCloud
Reserved: 19.06.2026 Published: 17.07.2026 Updated: 17.07.2026

Missing Authorization in Google Cloud Firebase Studio versions prior to 2026-04-15 on Google Cloud Platform allows an attacker to download other users' deployed source code and access sensitive data via unauthorized GCS URL signing requests.

This vulnerability was patched on 15 April 2026, and no customer action is needed.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/U:Clear
CVSS Score: 8.5

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

CVSS 4.0

Product Status

Vendor	Google Cloud
Product	Firebase Studio
Versions	Default: unaffected affected from 0 to 2026-04-15 (excl.)

Solutions

This vulnerability was patched on April 15, 2026 on the server-side.

As a precautionary measure, users who may have stored sensitive information such as API keys (e.g., GEMINI_API_KEY) within their Firebase Studio workspace may choose to rotate these keys.

Instructions for rotating the GEMINI_API_KEY can be found at https://firebase.google.com/docs/studio/troubleshooting#rotate-gemini-key .

Credits

A Security Researcher reporter

References

https://docs.cloud.google.com/support/bulletins#gcp-2026-043

Problem Types

CWE-862 Missing Authorization CWE

Impacts

CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs