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AWS Security BulletinsCVE-2026-115415

CVE-2026-115415 - Secret masking bypass in the environment tool in Strands Agents Tools

Severity not listed 1 CVE Published Oct 28, 2026 at 7:39 PM UTC

Summary

Bulletin ID: 2026-154-AWS

Publication Date: 10/28/2026 12:30 PM PDT

Description:

We identified CVE-2026-115415, an issue where the environment tool accepted a masking parameter from the large language model (LLM) through its tool schema. A crafted prompt, delivered through content the agent is asked to process, could instruct the model to call the tool with masking turned off.

The tool would then return the agent host's environment variables in cleartext, including cloud credentials and API keys, without prompting the operator for consent.

Impacted versions: >= 0.1.0 AND < 0.8.6

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Products covered

A separate affected-products list was not included in the collected bulletin.

Remediation

Separate remediation guidance was not included in the collected bulletin.

CVEs in this advisory 1

Updates

  1. Published by AWS

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  2. Added to SecurityAlert

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