Auth bypass in AWS Strands-Agents-Tools
CVE-2026-19111
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (44.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- AWS Strands-Agents-Tools — versions 0
Weakness classification (CWE)
References
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory)
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes)
- ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes, patch)
Frequently asked questions
- What is CVE-2026-19111?
- CVE-2026-19111 is a high-severity vulnerability in AWS Strands-Agents-Tools, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-08-06.
- How severe is CVE-2026-19111?
- High severity. CVSS v3 base score is 8.1 out of 10.