High severity · published Aug 6, 2026
CVE-2026-19111
Insecure direct object reference in Strands Agents Tools memory tool namespace isolation
8.1
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ST
strands-agents-tools · AWS
before 0.8.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19111
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19111
aws.amazon.com
https://aws.amazon.com/security/security-bulletins/2026-077-aws/
github.com
https://github.com/strands-agents/tools/security/advisories/GHSA-mpxq-953j-42m4
pypi.org
https://pypi.org/project/strands-agents-tools/0.8.3/
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