CVE-2026-115419
HIGH
8,6
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH
8,1
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: none
Description
AI Translation Available
The A2A server component in Amazon Strands Agents SDK for Python before 1.43.0 and Amazon Strands Agents SDK for TypeScript before 1.5.0 does not properly isolate conversation state between callers. An authenticated remote user could read other tenants' conversation history and add persistent instructions that alter model behavior for subsequent callers via HTTP requests to the A2A endpoint using a different context_id.
To mitigate this issue, users should upgrade to strands-agents 1.43.0 (Python) or @strands-agents/sdk 1.5.0 (TypeScript).
488
Exposure of Data Element to Wrong Session
DraftCommon Consequences
Security Scopes Affected:
Confidentiality
Potential Impacts:
Read Application Data
Applicable Platforms
All platforms may be affected
https://aws.amazon.com/security/security-bulletins/2026-146-aws/
https://github.com/strands-agents/harness-sdk/security/advisories/GHSA-4v6f-7vj…
https://pypi.org/project/strands-agents/1.43.0/
https://www.npmjs.com/package/@strands-agents/sdk/v/1.5.0