CVE-2026-19111

Insecure direct object reference in Strands Agents Tools memory tool namespace isolation

HIGH
8.1
CVSS Score
Published: August 6, 2026 at 06:03 PM UTC
Updated: October 23, 2026 at 09:10 PM UTC
1 product affected across 1 vendorStrands Agents Tools

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Severity
HIGH8.1
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 0.8.30
Affected range stops below 0.8.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

Vendor Advisory
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
https://aws.amazon.com/security/security-bulletins/2026-077-aws/
Release Notes
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
https://github.com/strands-agents/tools/security/advisories/GHSA-mpxq-953j-42m4
Release NotesPatch
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
https://pypi.org/project/strands-agents-tools/0.8.3/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHAMZN
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-639

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