{"id":"CVE-2026-107294","summary":"Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl","details":"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.","aliases":["GHSA-v2xh-2vp8-57h8"],"modified":"2026-10-10T02:47:39.072062047Z","published":"2026-10-08T16:59:25.246Z","database_specific":{"cwe_ids":["CWE-400"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107294.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.2"},{"type":"WEB","url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.24.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107294.json"},{"type":"ADVISORY","url":"https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-v2xh-2vp8-57h8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107294"},{"type":"FIX","url":"https://github.com/pydantic/pydantic-ai/commit/7a64d049c3f5271a975cd1d64b2fa876d83ede1d"},{"type":"FIX","url":"https://github.com/pydantic/pydantic-ai/commit/e3824a58c82864ed26afb2887619834a4eb86cc8"},{"type":"FIX","url":"https://github.com/pydantic/pydantic-ai/pull/7141"},{"type":"FIX","url":"https://github.com/pydantic/pydantic-ai/pull/7308"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pydantic/pydantic-ai","events":[{"introduced":"a282bcade2c2a75847806bbba9cf511dd0623019"},{"introduced":"6001a4549018ad5509f2c11ed6c38d2385159506"},{"fixed":"e3824a58c82864ed26afb2887619834a4eb86cc8"},{"fixed":"7a64d049c3f5271a975cd1d64b2fa876d83ede1d"}],"database_specific":{"extracted_events":[{"introduced":"1.77.0"},{"fixed":"1.107.2"},{"introduced":"2.0.0b1"},{"fixed":"2.24.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v1.107.1","v2.23.0","v2.22.0","v2.21.0","v2.20.0","v2.19.0","v2.18.0","v2.17.0","v2.16.0","v2.15.0","v2.14.1","v2.14.0","v2.13.0","v2.12.0","v2.11.0","v2.10.0","v2.9.1","v2.9.0","v1.107.0","v2.8.0","v2.7.0","v2.6.0","v2.5.1","v2.5.0","v2.4.0","v2.3.0","v2.2.0","v2.1.0","v2.0.0","v1.106.0","v1.105.0","v1.104.0","v1.103.0","v1.102.0","v1.91.0","v1.101.0","v1.100.0","v1.99.0","v1.98.0","v1.97.0","v1.96.0","v1.96.1","v1.94.0","v1.95.1","v1.95.0","v1.93.0","v1.92.0","v1.90.0","v1.89.1","v1.89.0","v1.88.0","v1.87.0","v1.86.0","v1.86.1","v1.85.1","v1.85.0","v1.84.1","v1.84.0","v1.83.0","v1.82.0","v1.81.0","v1.80.0","v1.79.0","v1.78.0","v1.77.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107294.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}