{"id":"CVE-2026-114386","revision":"4169c01420a74d8da5b6469d50acf590","records":[{"revision":"4169c01420a74d8da5b6469d50acf590","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-114386","aliases":[],"title":"Pydantic AI Harness before 0.59.0 CodeMode Tool Call Limit Bypass via run_code","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.","state":0,"publishedAt":"2026-10-21T12:39:43.886+00:00","modifiedAt":"2026-10-21T19:55:49.371+00:00","affected":[{"ecosystem":"Vendor product","name":"pydantic-ai-harness","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"pydantic\",\n                    \"product\": \"pydantic-ai-harness\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"0.59.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:pypi/pydantic-ai-harness\",\n                    \"repo\": \"https://github.com/pydantic/pydantic-ai\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","score":6.3,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","score":4.8,"severity":"MEDIUM"}],"references":["https://github.com/pydantic/pydantic-ai/pull/10362","https://github.com/pydantic/pydantic-ai/commit/eb27b2b89fe76ae23ee9b6fc9eb4b227a4967949","https://github.com/pydantic/pydantic-ai/releases/tag/v2.59.0","https://github.com/pydantic/pydantic-ai/blob/v2.58.0/src/pydantic_ai_harness/pydantic_ai_harness/code_mode/_toolset.py#L642-L680","https://pypi.org/project/pydantic-ai-harness/0.59.0/","https://www.vulncheck.com/advisories/pydantic-ai-harness-before-0.59.0-codemode-tool-call-limit-bypass-via-run-code"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114386","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-114386","identifiers":["CVE-2026-114386"]},"retained":false,"historicalAffected":[]}],"coverage":[]}