{"id":"CVE-2026-107294","revision":"71f90b56f3774ecd84a64e6166258247","records":[{"revision":"71f90b56f3774ecd84a64e6166258247","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-107294","aliases":[],"title":"Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl","description":"Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.2 and 2.24.0, web_fetch_tool, the WebFetch local fallback, and remote FileUrl media downloads buffer the complete HTTP response body before enforcing content-size controls. An attacker-influenced URL can stream an arbitrarily large response that exhausts process memory and crashes the worker; affected media types include ImageUrl, DocumentUrl, VideoUrl, and AudioUrl. SSRF protections remain effective, and the impact is limited to availability. This issue is fixed in versions 1.107.2 and 2.24.0.","state":0,"publishedAt":"2026-10-08T16:59:25.246+00:00","modifiedAt":"2026-10-09T15:15:18.765+00:00","affected":[{"ecosystem":"Vendor product","name":"pydantic-ai","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"pydantic\",\n                    \"product\": \"pydantic-ai\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.77.0, < 1.107.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2.0.0b1, < 2.24.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"pydantic-ai-slim","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"pydantic\",\n                    \"product\": \"pydantic-ai-slim\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.77.0, < 1.107.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2.0.0b1, < 2.24.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-v2xh-2vp8-57h8","https://github.com/pydantic/pydantic-ai/pull/7141","https://github.com/pydantic/pydantic-ai/pull/7308","https://github.com/pydantic/pydantic-ai/commit/7a64d049c3f5271a975cd1d64b2fa876d83ede1d","https://github.com/pydantic/pydantic-ai/commit/e3824a58c82864ed26afb2887619834a4eb86cc8","https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.2","https://github.com/pydantic/pydantic-ai/releases/tag/v2.24.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107294","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107294","identifiers":["CVE-2026-107294"]},"retained":false,"historicalAffected":[]}],"coverage":[]}