What’s Vulnerable › Vulnerabilities

CVE-2026-19111: Insecure direct object reference in Strands Agents Tools memory tool namespace isolation

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-06 · updated 2026-10-23
• Weakness: CWE-639

Description

Insecure direct object reference in the mongodb_memory, elasticsearch_memory, and mem0_memory tools in Amazon Strands Agents Tools before 0.8.3 might allow remote authenticated users to access, modify, or delete memories belonging to other tenants by influencing the LLM to emit tool calls with a forged namespace parameter. To remediate this issue, users should upgrade to version 0.8.3.

Affected products

• AWS strands-agents-tools: before 0.8.3 — fixed in 0.8.3

How to fix

Upgrade to a fixed version: AWS strands-agents-tools 0.8.3. Check the vendor advisory for mitigations.

References

• https://aws.amazon.com/security/security-bulletins/2026-077-aws/
• https://github.com/strands-agents/tools/security/advisories/GHSA-mpxq-953j-42m4
• https://pypi.org/project/strands-agents-tools/0.8.3/

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