Vulnerability-Lookup

CVE-2026-83551 (GCVE-0-2026-83551)

Vulnerability from cvelistv5 – Published: 2026-09-01 18:11 – Updated: 2026-09-01 19:13

Title

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

Summary

Cleartext storage of sensitive information in the @step and @remote decorator pipeline component in Amazon SageMaker Python SDK before v3.11.0 and v2.256.0 might allow an authenticated remote user to extract the HMAC signing key from SageMaker DescribePipeline API responses and forge valid integrity signatures for specially crafted function payloads, achieving code execution in another user's pipeline execution context within the same AWS account.

Severity

7.2 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

8.5 (High)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-01 19:13 UTC

CWE

CWE-312 - Cleartext storage of sensitive information

Assigner

AMZN mitre root

References

4 references

URL	Tags
https://github.com/aws/sagemaker-python-sdk/relea…	patchrelease-notes
https://github.com/aws/sagemaker-python-sdk/relea…	patchrelease-notes
https://aws.amazon.com/security/security-bulletin…	vendor-advisory
https://github.com/aws/sagemaker-python-sdk/secur…	release-notes

Impacted products

1 product

Vendor	Product	Version	CPE status
AWS	sagemaker-python-sdk	Affected: 0 , < 3.11.0 (custom) Affected: 0 , < 2.256.0 (custom) cpe:2.3:a:aws:sagemaker-python-sdk:::::::: cpe:2.3:a:aws:sagemaker-python-sdk::::::::

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-83551

Vulnerability from fkie_nvd - Published: 2026-09-01 19:17 - Updated: 2026-09-03 16:44

Severity

7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	ff89ba41-3aa1-4d27-914a-91399e9639e5	https://aws.amazon.com/security/security-bulletins/2026-093-aws/
	ff89ba41-3aa1-4d27-914a-91399e9639e5	https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.256.0
	ff89ba41-3aa1-4d27-914a-91399e9639e5	https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.11.0
	ff89ba41-3aa1-4d27-914a-91399e9639e5	https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-7xmc-crrw-fv5r

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "lastModified": "2026-09-03T16:44:01.873",
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          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "HIGH",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-83551",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-01T19:13:38.260959Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-01T19:17:29.483",
  "references": [
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "url": "https://aws.amazon.com/security/security-bulletins/2026-093-aws/"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "url": "https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.256.0"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "url": "https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.11.0"
    },
    {
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "url": "https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-7xmc-crrw-fv5r"
    }
  ],
  "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-312"
        }
      ],
      "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
      "type": "Secondary"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-83551 (GCVE-0-2026-83551)

FKIE_CVE-2026-83551

Tags

Sightings

Nomenclature