CVE-2026-54249
CVE-2026-54249 · VercelAIAdapter trusts client-controlled `providerMetadata` to construct `UploadedFile` — S3/GCS confused deputy via provider metadata injection
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Pydantic AI is a Python agent framework for building Generative AI applications. In versions 1.65.0 through 1.105.0, and 2.0.0b1 through 2.0.0b5, a client that submits message history to a Pydantic AI UI adapter (such as the Vercel AI adapter) can reference arbitrary files in the application's model-provider or cloud-storage account. While file URL parts are validated against a scheme allowlist, UploadedFile references — which point to a file by provider file ID or cloud-storage URI (e.g. s3://…, gs://…) — were forwarded without validation. Because the provider resolves an UploadedFile using the server-side identity (IAM role, service account, or provider API key) rather than the client's, an attacker can craft message history to make the server read objects from its own account or other tenants, given a referenceable identifier. Exploitation requires a valid file identifier, which is not always unguessable depending on how the application names objects. This issue has been fixed in versions 1.106.0 and 2.0.0b6.
CVSS 6.8 · Moyenne · EPSS 0,3% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: python
Produits et versions concernés
pydantic-ai
- Versions du logiciel
- >= 1.65.0, < 1.106.0: Concernée
- >= 2.0.0b1, < 2.0.0b6: Concernée
Aucun correctif publié
pydantic-ai-slim
- Versions du logiciel
- >= 2.0.0b1, < 2.0.0b6: Concernée
- >= 1.65.0, < 1.106.0: Concernée
Aucun correctif publié
pydantic-ai-slim PyPI
- Versions du logiciel
- 1.100.0
- 1.101.0
- 1.102.0
- 1.103.0
- 1.104.0
- 1.105.0
- 1.65.0
- 1.66.0
- 1.67.0
- 1.68.0
- 1.69.0
- 1.70.0
- 1.71.0
- 1.72.0
- 1.73.0
- 1.74.0
- 1.75.0
- 1.76.0
- 1.77.0
- 1.78.0
- 1.79.0
- 1.80.0
- 1.81.0
- 1.82.0
- 1.83.0
- 1.84.0
- 1.84.1
- 1.85.0
- 1.85.1
- 1.86.0
- 1.86.1
- 1.87.0
- 1.88.0
- 1.89.0
- 1.89.1
- 1.90.0
- 1.91.0
- 1.92.0
- 1.93.0
- 1.94.0
- 1.95.0
- 1.95.1
- 1.96.0
- 1.96.1
- 1.97.0
- 1.98.0
- 1.99.0
- Plages de versions concernées
- ECOSYSTEM: ≥ 1.65.0, < 1.106.0
Mettez à jour vers 1.106.0
pydantic-ai-slim PyPI
- Versions du logiciel
- 2.0.0b1
- 2.0.0b2
- 2.0.0b3
- 2.0.0b4
- 2.0.0b5
- Plages de versions concernées
- ECOSYSTEM: ≥ 2.0.0b1, < 2.0.0b6
Mettez à jour vers 2.0.0b6
pydantic-ai PyPI
- Versions du logiciel
- 1.100.0
- 1.101.0
- 1.102.0
- 1.103.0
- 1.104.0
- 1.105.0
- 1.65.0
- 1.66.0
- 1.67.0
- 1.68.0
- 1.69.0
- 1.70.0
- 1.71.0
- 1.72.0
- 1.73.0
- 1.74.0
- 1.75.0
- 1.76.0
- 1.77.0
- 1.78.0
- 1.79.0
- 1.80.0
- 1.81.0
- 1.82.0
- 1.83.0
- 1.84.0
- 1.84.1
- 1.85.0
- 1.85.1
- 1.86.0
- 1.86.1
- 1.87.0
- 1.88.0
- 1.89.0
- 1.89.1
- 1.90.0
- 1.91.0
- 1.92.0
- 1.93.0
- 1.94.0
- 1.95.0
- 1.95.1
- 1.96.0
- 1.96.1
- 1.97.0
- 1.98.0
- 1.99.0
- Plages de versions concernées
- ECOSYSTEM: ≥ 1.65.0, < 1.106.0
Mettez à jour vers 1.106.0
pydantic-ai PyPI
- Versions du logiciel
- 2.0.0b1
- 2.0.0b2
- 2.0.0b3
- 2.0.0b4
- 2.0.0b5
- Plages de versions concernées
- ECOSYSTEM: ≥ 2.0.0b1, < 2.0.0b6
Mettez à jour vers 2.0.0b6
pydantic-ai PyPI
- Versions du logiciel
- 1.100.0
- 1.101.0
- 1.102.0
- 1.103.0
- 1.104.0
- 1.105.0
- 1.65.0
- 1.66.0
- 1.67.0
- 1.68.0
- 1.69.0
- 1.70.0
- 1.71.0
- 1.72.0
- 1.73.0
- 1.74.0
- 1.75.0
- 1.76.0
- 1.77.0
- 1.78.0
- 1.79.0
- 1.80.0
- 1.81.0
- 1.82.0
- 1.83.0
- 1.84.0
- 1.84.1
- 1.85.0
- 1.85.1
- 1.86.0
- 1.86.1
- 1.87.0
- 1.88.0
- 1.89.0
- 1.89.1
- 1.90.0
- 1.91.0
- 1.92.0
- 1.93.0
- 1.94.0
- 1.95.0
- 1.95.1
- 1.96.0
- 1.96.1
- 1.97.0
- 1.98.0
- 1.99.0
- 2.0.0b1
- 2.0.0b2
- 2.0.0b3
- 2.0.0b4
- 2.0.0b5
- Plages de versions concernées
- ECOSYSTEM: ≥ 1.65.0, < 1.106.0 ∪ ≥ 2.0.0b1, < 2.0.0b6
Mettez à jour vers 1.106.0; Mettez à jour vers 2.0.0b6
pydantic-ai-slim PyPI
- Versions du logiciel
- 1.100.0
- 1.101.0
- 1.102.0
- 1.103.0
- 1.104.0
- 1.105.0
- 1.65.0
- 1.66.0
- 1.67.0
- 1.68.0
- 1.69.0
- 1.70.0
- 1.71.0
- 1.72.0
- 1.73.0
- 1.74.0
- 1.75.0
- 1.76.0
- 1.77.0
- 1.78.0
- 1.79.0
- 1.80.0
- 1.81.0
- 1.82.0
- 1.83.0
- 1.84.0
- 1.84.1
- 1.85.0
- 1.85.1
- 1.86.0
- 1.86.1
- 1.87.0
- 1.88.0
- 1.89.0
- 1.89.1
- 1.90.0
- 1.91.0
- 1.92.0
- 1.93.0
- 1.94.0
- 1.95.0
- 1.95.1
- 1.96.0
- 1.96.1
- 1.97.0
- 1.98.0
- 1.99.0
- 2.0.0b1
- 2.0.0b2
- 2.0.0b3
- 2.0.0b4
- 2.0.0b5
- Plages de versions concernées
- ECOSYSTEM: ≥ 1.65.0, < 1.106.0 ∪ ≥ 2.0.0b1, < 2.0.0b6
Mettez à jour vers 1.106.0; Mettez à jour vers 2.0.0b6