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01 Record

CVE-2026-85297

Bucket Squatting in Cloud Run MCP leads to Service Account Takeover

HighPUBLISHEDCNA: GoogleCloud
CNA base score7.7 CVSS v4.0CVSS: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

02 Description

Bucket Squatting in Cloud Run MCP leads to Service Account Takeover

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.31% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 24.1% of scored records. A rank, not a probability.
NVD base score
7.7 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-26.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-26 14:58Z2 DAYS AGO
Last updated
2026-10-26 14:58Z2 DAYS AGO
Reserved
2026-09-03
Assigning CNA
GoogleCloud
Record state
PUBLISHED
Severity
High (CVSS 7.7)
CNA CVSS 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
Weaknesses
  • CWE-340Generation of Predictable Numbers or IdentifiersClass
Data version
5.2
Document digest
4bda9a803540913aaba97f5d632571bb66f7a2e48eeed02c5a44f20b2237762d

05 Affected products

VendorProductVersionsPlatforms
Google CloudCloud Run MCP0 to < 1.11.0—

06 References

07 Remediation

Users must upgrade to Cloud Run MCP version 1.11.0 or later.