CVE-2026-107287mediumCWE-400CWE-407

CVE-2026-107287: falha de média gravidade em pydantic-ai

Pydantic AI: Excessive resource use when local web fetching converts nested HTML

Publicada em · Atualizada em

Seguir esta CVE+ Monitorar pydantic-ai+ Monitorar pydantic-ai-slim

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 6.5epss 0.3%
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.7 and 2.52.0, the local web_fetch_tool and the WebFetch local fallback can consume excessive CPU and memory during HTML-to-Markdown conversion of attacker-controlled HTML containing deeply nested block elements. Conversion repeatedly reprocesses accumulated text and can greatly expand intermediate output before the returned-content limit is applied, allowing a model-directed fetch to delay other work in the process. Provider-native web fetching is not affected. This issue is fixed in versions 1.107.7 and 2.52.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Produtos afetados
pydantic · pydantic-aipydantic · pydantic-ai-slim
CVEs relacionadas — pydantic-ai

No mesmo produto, das mais perigosas para as menos.

CVE-2026-25580HIGHPydantic AI Affected by Server-Side Request Forgery (SSRF) in URL Download HandlingEPSS 0.6%CVE-2026-107291LOWPydantic AI OpenTelemetry instrumentation: exception events on tool and agent run spans include content when `include_content=False`EPSS 0.6%CVE-2026-107290MEDIUMPydantic AI: Event loop blocked by quadratic title extraction in `web_fetch`EPSS 0.5%CVE-2026-107286HIGHPydantic AI: Concurrency-limited models can keep their slot when a streamed request ends earlyEPSS 0.4%CVE-2026-107294MEDIUMPydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrlEPSS 0.4%CVE-2026-48782MEDIUMpydantic-ai: SSRF blocklist bypass via IPv4-compatible, SIIT/IVI, and local NAT64 IPv6 addresses (incomplete fix of CVE-2026-46678)EPSS 0.4%