---
title: "CVE-2026-115419: Amazon Strands Agents SDK - Broken Access Control"
description: "Amazon Strands Agents SDK for Python < 1.43.0 and TypeScript < 1.5.0 contain an information disclosure vulnerability caused by improper isolation of conversation state in the A2A server component, letting authenticated remote users read other tenants' conversation history and alter model behavior via HTTP requests with different context_id."
url: https://panop.io/threat-heartbeat/CVE-2026-115419/
---

# CVE-2026-115419 Amazon Strands Agents SDK - Broken Access Control

Amazon Strands Agents SDK for Python < 1.43.0 and TypeScript < 1.5.0 contain an information disclosure vulnerability caused by improper isolation of conversation state in the A2A server component, letting authenticated remote users read other tenants' conversation history and alter model behavior via HTTP requests with different context\_id.

CVSS base score 8.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-115419)

## Details

Type

Broken Access Control

Impact

Information Disclosure, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Published

22 October 2026

Updated

23 October 2026

Weakness

[CWE-488](https://cwe.mitre.org/data/definitions/488.html)

## Vendor fix

Upgrade to strands-agents 1.43.0 (Python) or @strands-agents/sdk 1.5.0 (TypeScript).

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-115419](https://nvd.nist.gov/vuln/detail/CVE-2026-115419)
- [https://aws.amazon.com/security/security-bulletins/2026-146-aws/](https://aws.amazon.com/security/security-bulletins/2026-146-aws/)
- [https://github.com/strands-agents/harness-sdk/security/advisories/GHSA-4v6f-7vjh-6x4m](https://github.com/strands-agents/harness-sdk/security/advisories/GHSA-4v6f-7vjh-6x4m)
- [https://pypi.org/project/strands-agents/1.43.0/](https://pypi.org/project/strands-agents/1.43.0/)
- [https://www.npmjs.com/package/@strands-agents/sdk/v/1.5.0](https://www.npmjs.com/package/@strands-agents/sdk/v/1.5.0)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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