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01 Record

CVE-2026-83551

Cleartext storage of HMAC signing key in Amazon SageMaker Python SDK @step/@remote pipeline path

HighPUBLISHEDCNA: AMZN
CNA base score8.5 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H

02 Description

Cleartext storage of HMAC signing key in Amazon SageMaker Python SDK @step/@remote pipeline path

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.80% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 56.3% of scored records. A rank, not a probability.
NVD base score
8.5 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/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 2026-09-03.
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
2026-09-01 18:11Z1 MO AGO
Last updated
2026-09-01 19:13Z1 MO AGO
Reserved
2026-08-31
Assigning CNA
AMZN
Record state
PUBLISHED
Severity
High (CVSS 8.5)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H
Weaknesses
  • CWE-312Cleartext Storage of Sensitive InformationBase
Data version
5.2
Document digest
e203b6992e245de298c035671d8258f869062d0be4717ed3240d0f00148513ca

05 Affected products

VendorProductVersionsPlatforms
AWSsagemaker-python-sdk0 to < 3.11.0, 0 to < 2.256.0—

06 References