Vulnerability · Published Oct 26, 2026 · Assigned by GoogleCloud
CVE-2026-85297Bucket Squatting in Cloud Run MCP leads to Service Account Takeover
High 7.7
In plain English
A high-severity security flaw in Cloud Run MCP from Google Cloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).
Severity (CVSS 4.0)7.7High
Exploit odds (30 days)0.3%top 75.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Bucket Squatting in Google Cloud Run MCP versions prior to 1.11.0 on Google Cloud Platform allows an attacker to intercept and access proprietary source code, execute arbitrary code and exfiltrate data. Users must upgrade to Cloud Run MCP version 1.11.0 or later.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Google Cloud | Cloud Run MCP | 0 – before 1.11.0 |
Weakness: CWE-340 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Amber