CVE-2026-107294
mediumPydantic AI is a Python agent framework for building applications and workflows with Generative AI.
Vendor / product: Pydantic — pydantic ai
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/pydantic/pydantic-ai/commit/7a64d049c3f5271a975cd1d64b2fa876d83ede1d security-advisories@github.com
- https://github.com/pydantic/pydantic-ai/commit/e3824a58c82864ed26afb2887619834a4eb86cc8 security-advisories@github.com
- https://github.com/pydantic/pydantic-ai/pull/7141 security-advisories@github.com
- https://github.com/pydantic/pydantic-ai/pull/7308 security-advisories@github.com
- https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.2 security-advisories@github.com
- https://github.com/pydantic/pydantic-ai/releases/tag/v2.24.0 security-advisories@github.com
- https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-v2xh-2vp8-57h8 security-advisories@github.com