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01 Record

CVE-2026-112408

Missing bucket ownership verification in Amazon SageMaker Python SDK default_bucket()

CriticalPUBLISHEDCNA: AMZN
CNA base score9.4 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N
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02 Description

Missing bucket ownership verification in Amazon SageMaker Python SDK default_bucket()

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
0.74% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 54.4% of scored records. A rank, not a probability.
NVD base score
9.4 (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:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N/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:X
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-22.
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
2026-10-21 19:36Z7 DAYS AGO
Last updated
2026-10-21 19:47Z7 DAYS AGO
Reserved
2026-10-19
Assigning CNA
AMZN
Record state
PUBLISHED
Severity
Critical (CVSS 9.4)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N
Weaknesses
  • CWE-940Improper Verification of Source of a Communication ChannelBase
Data version
5.2
Document digest
27510759c4aa6a33880d150149f6544806f6fe52b5709322b7a6d1af9d97730b

05 Affected products

VendorProductVersionsPlatforms
AWSAmazon SageMaker Python SDK0 to < 2.257.3, 3.0.0 to < 3.10.0—

06 References