CVE-2026-114386
mediumPydantic 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.
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.
CVSS
4.8
4.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-10-21 13:18
Modified: 2026-10-22 17:39
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-10-27 07:05 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/pydantic/pydantic-ai/blob/v2.58.0/src/pydantic_ai_harness/pydantic_ai_h... disclosure@vulncheck.com
- https://github.com/pydantic/pydantic-ai/commit/eb27b2b89fe76ae23ee9b6fc9eb4b227a4967949 disclosure@vulncheck.com
- https://github.com/pydantic/pydantic-ai/pull/10362 disclosure@vulncheck.com
- https://github.com/pydantic/pydantic-ai/releases/tag/v2.59.0 disclosure@vulncheck.com
- https://pypi.org/project/pydantic-ai-harness/0.59.0/ disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/pydantic-ai-harness-before-0.59.0-codemode-tool-call-... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:05 UTC · record ↗