Amazon AWS SageMaker Python SDK up to 2.255.x/3.1.x ModelBuilder DescribeTrainingJob cleartext transmission

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Amazon AWS SageMaker Python SDK up to 2.255.x/3.1.x. This affects the function DescribeTrainingJob of the component ModelBuilder. The manipulation results in cleartext transmission. This vulnerability is cataloged as CVE-2026-1777. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Amazon AWS SageMaker Python SDK up to 2.255.x/3.1.x. It has been classified as problematic. Affected is the function DescribeTrainingJob of the component ModelBuilder. The manipulation with an unknown input leads to a cleartext transmission vulnerability. CWE is classifying the issue as CWE-319. The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors. This is going to have an impact on confidentiality. CVE summarizes:

The Amazon SageMaker Python SDK before v3.2.0 and v2.256.0 includes the ModelBuilder HMAC signing key in the cleartext response elements of the DescribeTrainingJob function. A third party with permissions to both call this API and permissions to modify objects in the Training Jobs S3 output location may have the ability to upload arbitrary artifacts which are executed the next time the Training Job is invoked.

The advisory is shared for download at aws.amazon.com. This vulnerability is traded as CVE-2026-1777 since 02/02/2026. The exploitability is told to be difficult. It is possible to launch the attack remotely. Additional levels of successful authentication are needed for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1040.

Upgrading to version 2.256.0 or 3.2.0 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 2.2
VulDB Temp Score: 2.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.2
CNA Vector (AMZN): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cleartext transmission
CWE: CWE-319 / CWE-310
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: AWS SageMaker Python SDK 2.256.0/3.2.0

Timelineinfo

02/02/2026 CVE reserved
02/03/2026 +1 days Advisory disclosed
02/03/2026 +0 days VulDB entry created
02/03/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: aws.amazon.com
Status: Confirmed

CVE: CVE-2026-1777 (🔒)
GCVE (CVE): GCVE-0-2026-1777
GCVE (VulDB): GCVE-100-343824

Entryinfo

Created: 02/03/2026 07:43
Changes: 02/03/2026 07:43 (78)
Complete: 🔍
Cache ID: 216::103

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