CVE-2026-83551

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 68% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.2
EG Score
7.2(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity72% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 3, 2026

Advisory Details (4)

Auto-updated Sep 1, 2026
Patch available. Sources: github_release, github.
github Patch Available

Cleartext storage of HMAC signing key in Amazon SageMaker Python SDK @step/@remote pipeline path · Advisory · aws/sagemaker-python-sdk · GitHub

https://github.com/aws/sagemaker-python-sdk/security/advisories/GHSA-7xmc-crrw-fv5r
generic

CVE-2026-83551 - Cleartext storage of HMAC signing key in Amazon SageMaker Python SDK

https://aws.amazon.com/security/security-bulletins/2026-093-aws/
github_release Patch Available

v3.11.0

Patch available: aws/sagemaker-python-sdk v3.11.0

https://github.com/aws/sagemaker-python-sdk/releases/tag/v3.11.0
github_release Patch Available

v2.256.0

Patch available: aws/sagemaker-python-sdk v2.256.0

https://github.com/aws/sagemaker-python-sdk/releases/tag/v2.256.0

Vendor Advisories for CVE-2026-83551(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 32× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-18 19:36 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-17 20:42 UTCEG score recompute
  4. 2026-09-17 19:32 UTCEPSS rescore
  5. 2026-09-16 18:39 UTCEG score recompute
  6. 2026-09-16 14:09 UTCEPSS rescore
  7. 2026-09-16 05:48 UTCEG score recompute
  8. 2026-09-16 05:15 UTCEPSS rescore
  9. 2026-09-15 06:25 UTCEG score recompute
  10. 2026-09-15 03:12 UTCEPSS rescore
  11. 2026-09-15 03:12 UTCEPSS rescore
  12. 2026-09-13 20:06 UTCEG score recompute
  13. 2026-09-12 21:12 UTCEG score recompute
  14. 2026-09-11 22:18 UTCEG score recompute
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-11 10:48 UTCEG score recompute
  18. 2026-09-10 11:34 UTCEG score recompute
  19. 2026-09-08 23:22 UTCEG score recompute
  20. 2026-09-08 22:01 UTCEPSS rescore
  21. 2026-09-08 02:20 UTCEG score recompute
  22. 2026-09-07 01:05 UTCEG score recompute
  23. 2026-09-06 13:48 UTCEPSS rescore
  24. 2026-09-06 02:12 UTCEG score recompute
  25. 2026-09-05 15:31 UTCEPSS rescore
Show 7 more
  1. 2026-09-04 15:52 UTCEG score recompute
  2. 2026-09-04 05:07 UTCEPSS rescore
  3. 2026-09-02 20:00 UTCEG score recompute
  4. 2026-09-02 14:12 UTCEPSS rescore
  5. 2026-09-01 19:30 UTCEG score recompute
  6. 2026-09-01 18:23 UTCEG score recompute
  7. 2026-09-01 18:22 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-83551?
CVE-2026-83551 is a high vulnerability published on September 1, 2026. 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…
When was CVE-2026-83551 disclosed?
CVE-2026-83551 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-83551 actively exploited?
CVE-2026-83551 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 68.2% of all scored CVEs.
What is the CVSS score of CVE-2026-83551?
CVE-2026-83551 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-83551?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-83551, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-83551

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