EUVD-2026-65735Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable via prompt with no privileges or user interaction, but AC:H reflects the probabilistic model-compliance requirement (maps 4.0 AT:P); python_repl RCE yields full C/I/A on the host.
Primary rating from Vendor (ff89ba41-3aa1-4d27-914a-91399e9639e5).
CVSS VectorVendor: ff89ba41-3aa1-4d27-914a-91399e9639e5
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
Improper neutralization of input used for LLM prompting in the python_repl tool in Amazon Strands Agents Tools before 0.8.5 might allow remote actors to execute arbitrary Python code on the agent's host by bypassing the human consent gate, via a crafted prompt that forwards non_interactive_mode as a keyword argument through the batch tool. To remediate this issue, users should upgrade to version 0.8.5 or later.
Articles & Coverage 1
AnalysisAI
Remote code execution in Amazon Strands Agents Tools before 0.8.5 lets an attacker abuse the python_repl tool to run arbitrary Python on the agent's host by defeating its human-in-the-loop consent gate. A crafted prompt smuggles the non_interactive_mode flag as a keyword argument through the batch tool, causing python_repl to execute without operator approval. …
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Attack ChainAIDerived
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Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target agent has the python_repl tool enabled AND exposes the batch tool through which keyword arguments can be forwarded, running on strands-agents-tools before 0.8.5. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are largely consistent toward high priority but with one important nuance. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade strands-agents-tools to 0.8.5 or later (pip install --upgrade 'strands-agents-tools>=0.8.5'), per AWS security bulletin 2026-089 (https://aws.amazon.com/security/security-bulletins/2026-089-aws/) and the PyPI release page (https://pypi.org/project/strands-agents-tools/0.8.5/). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running Amazon Strands Agents Tools, document versions, and identify those running versions before 0.8.5. …
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