CVE-2026-10740 - Excessive memory allocation in s2n-quic

unknownCVE-2026-10740 CVE-2026-11417

Bulletin ID: 2026-041-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 06/10/2026 10:45 AM PDT Description: AWS CDK (aws-cdk-lib) is an open-source framework for defining cloud infrastructure in code and provisioning it through AWS CloudFormation. We identified CVE-2026-11417, an OS command injection issue in the NodejsFunction local bundling pipeline in aws-cdk-lib before 2.245.0 (2.246.0 on Windows) that may allow an actor who controls the value of one or more bundling properties (externalModules, define, loader, inject, or esbuildArgs) to execute arbitrary commands on the host running the CDK toolchain via injected shell metacharacters. This issue requires the actor to control the value of one or more of the affected bundling properties in the CDK application. Impacted versions: < 2.245.0 (on Windows, < 2.246.0) Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

CSIRTS triage

vendor: AWS product: aws-cdk-lib Code injectionaffected: < 2.245.0 (on Windows, < 2.246.0)

What: An OS command injection issue may allow execution of arbitrary commands on the host.
Who is affected: Users of aws-cdk-lib versions before 2.245.0 (2.246.0 on Windows).
Urgency: Remediation is important due to the potential for command injection.
Action: Update aws-cdk-lib to version 2.245.0 or later.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: AWS Security Bulletins (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-06-10
Exploitation: Not in CISA KEV at last sync

Original advisory: https://aws.amazon.com/security/security-bulletins/rss/2026-041-aws/

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-107400.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.
Low exploitation riskCVE-2026-114170.94% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 57% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-10740	coverage & exploitation status	NVD · CVE.org
CVE-2026-11417	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

highCVE-2026-10740 - Excessive memory allocation in s2n-quicaws

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