CVE-2026-114386

MediumCVSS 4.8/10Last modified Oct 22, 2026

Description

Pydantic AI Harness before 0.59.0 fails to enforce UsageLimits.tool_calls_limit on nested tool calls dispatched from run_code in the CodeMode toolset. Users or prompt-injected content can make the sandboxed program invoke tools via run_nested_call() without check_before_tool_call, exceeding operator limits on costly or side-effecting tools.

Metrics

CVSS 3.1 4.8/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Weakness enumeration

CWE-770

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
pydantic	pydantic-ai-harness	< 0.59.0

References

Timeline

Published: Oct 21, 2026
Last modified: Oct 22, 2026
NVD status: Awaiting Analysis

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