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Affected Vendors & Products
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Solution
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Workaround
No workaround given by the vendor.
Thu, 08 Oct 2026 18:30:00 +0000
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ssvc
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Thu, 08 Oct 2026 15:15:00 +0000
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| Description | 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. | |
| Title | Pydantic AI: Concurrency-limited models can keep their slot when a streamed request ends early | |
| Weaknesses | CWE-772 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-10-08T17:27:24.185Z
Reserved: 2026-10-07T15:53:23.586Z
Link: CVE-2026-107286
Updated: 2026-10-08T17:27:17.682Z
Status : Received
Published: 2026-10-08T15:17:40.753
Modified: 2026-10-08T18:17:16.307
Link: CVE-2026-107286
No data.
OpenCVE Enrichment
Updated: 2026-10-08T17:30:17Z