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CVE-2026-8596

Cleartext storage of sensitive information in the ModelBuilder/Serve component in Amazon SageMaker Python SDK before v2.257.2 and v3 before v3.8.0 might allow a remote authenticated actor to extract the HMAC signing key from SageMaker API responses and forge valid integrity signatures for specially crafted model artifacts, achieving code execution in inference containers. This issue requires a remote authenticated actor with permissions to call SageMaker describe APIs and S3 write access to the
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:32c43838443f087243d2fabb4278f24f26b9b3c9679d54206637bd8fd93ab96a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:73a7c3b2a3ba77e426cb026e069d1c01b114fb0799db76cc0ce7b193032c30d8 · sha256:5de3af430aafdee8… · /containers/cna/metrics/0/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.5,"baseSeverity":"HIGH","exploitMaturity":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:73a7c3b2a3ba77e426cb026e069d1c01b114fb0799db76cc0ce7b193032c30d8 · sha256:5de3af430aafdee8… · /containers/cna/metrics/1/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"AWS","vendor":"Amazon SageMaker Python SDK","versions":[{"lessThanOrEqual":"2.257.1","status":"affected","version":"2.199.0","versionType":"custom"},{"lessThanOrEqual":"3.7.1","status":"affected","version":"3.0.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:73a7c3b2a3ba77e426cb026e069d1c01b114fb0799db76cc0ce7b193032c30d8 · sha256:5de3af430aafdee8… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:73a7c3b2a3ba77e426cb026e069d1c01b114fb0799db76cc0ce7b193032c30d8 · sha256:5de3af430aafdee8… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.5,"baseSeverity":"HIGH","exploitMaturity":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:73a7c3b2a3ba77e426cb026e069d1c01b114fb0799db76cc0ce7b193032c30d8 · sha256:5de3af430aafdee8… · /containers/cna/metrics/1/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-312","description":"CWE-312 Cleartext storage of sensitive information","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:73a7c3b2a3ba77e426cb026e069d1c01b114fb0799db76cc0ce7b193032c30d8 · sha256:5de3af430aafdee8… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"tags":["vendor-advisory"],"url":"https://aws.amazon.com/security/security-bulletins/2026-031-aws/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:73a7c3b2a3ba77e426cb026e069d1c01b114fb0799db76cc0ce7b193032c30d8 · sha256:5de3af430aafdee8… · /containers/cna/references/2
{"tags":["patch"],"url":"https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.257.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:73a7c3b2a3ba77e426cb026e069d1c01b114fb0799db76cc0ce7b193032c30d8 · sha256:5de3af430aafdee8… · /containers/cna/references/0
{"tags":["patch"],"url":"https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.8.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:73a7c3b2a3ba77e426cb026e069d1c01b114fb0799db76cc0ce7b193032c30d8 · sha256:5de3af430aafdee8… · /containers/cna/references/1
{"tags":["third-party-advisory"],"url":"https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-7hh5-prp2-mfh5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:73a7c3b2a3ba77e426cb026e069d1c01b114fb0799db76cc0ce7b193032c30d8 · sha256:5de3af430aafdee8… · /containers/cna/references/3

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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