CVE Watch13 oct 2026

CVE-2026-107286

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 2.10.0 until 2.53.0, streamed reque

CVSS

7.5

Alto

EPSS

0.4%

p39

KEV

—

Exploit Today

0-100

Publicado: 8 oct 2026 · Última mod.: 13 oct 2026 · CWE-772

EPSS · 30d

0.4%EPSS · 30 días0.4%

2026-10-092026-10-25

Descripción técnica

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 2.10.0 until 2.53.0, streamed requests made through ConcurrencyLimitedModel or limit_model_concurrency can retain shared concurrency slots because anyio.CapacityLimiter associates an acquired slot with the borrowing task while streaming cleanup can run in a different task. Early stream termination, cancellation, consumer exceptions, or complete stream_text() consumption with debounce_by=0.1 can therefore leave capacity occupied, eventually preventing later requests that share the long-lived limiter from proceeding and causing a denial of service. Agent-level max_concurrency and non-streaming model requests are not affected. This issue is fixed in version 2.53.0.

Referencias oficiales

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