CVE-2026-107290
CVE-2026-107290 · Pydantic AI: Event loop blocked by quadratic title extraction in `web_fetch`
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.6 and 2.44.0, the local web_fetch_tool and the WebFetch local fallback process server-controlled responses with quadratic title extraction, whitespace normalization, and ordered-list numbering. An attacker-controlled page of modest size can therefore block the event loop for an extended period, stalling other agent runs and requests, while unsupported codecs or excessive HTML or JSON nesting can abort an individual run. This issue is fixed in versions 1.107.6 and 2.44.0.
CVSS 6.5 · Moyenne · EPSS 0,5% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: python
Produits et versions concernés
pydantic-ai
- Versions du logiciel
- >= 1.77.0, < 1.107.6: Concernée
- >= 2.0.0b1, < 2.44.0: Concernée
Aucun correctif publié
pydantic-ai-slim
- Versions du logiciel
- >= 1.77.0, < 1.107.6: Concernée
- >= 2.0.0b1, < 2.44.0: Concernée
Aucun correctif publié
pydantic-ai PyPI
- Versions du logiciel
- 1.100.0
- 1.101.0
- 1.102.0
- 1.103.0
- 1.104.0
- 1.105.0
- 1.106.0
- 1.107.0
- 1.107.1
- 1.107.2
- 1.107.4
- 1.107.5
- 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: ≥ 1.77.0, < 1.107.6
Mettez à jour vers 1.107.6
pydantic-ai PyPI
- Versions du logiciel
- 2.0.0
- 2.0.0b1
- 2.0.0b2
- 2.0.0b3
- 2.0.0b4
- 2.0.0b5
- 2.0.0b6
- 2.0.0b7
- 2.1.0
- 2.10.0
- 2.11.0
- 2.12.0
- 2.13.0
- 2.14.0
- 2.14.1
- 2.15.0
- 2.16.0
- 2.17.0
- 2.18.0
- 2.19.0
- 2.2.0
- 2.20.0
- 2.21.0
- 2.22.0
- 2.23.0
- 2.24.0
- 2.25.0
- 2.26.0
- 2.27.0
- 2.27.1
- 2.28.0
- 2.29.0
- 2.3.0
- 2.30.0
- 2.31.0
- 2.31.1
- 2.32.0
- 2.32.1
- 2.32.2
- 2.33.0
- 2.34.0
- 2.35.0
- 2.35.1
- 2.35.3
- 2.36.0
- 2.37.0
- 2.38.0
- 2.39.0
- 2.4.0
- 2.40.0
- 2.41.0
- 2.42.0
- 2.43.0
- 2.5.0
- 2.5.1
- 2.6.0
- 2.7.0
- 2.8.0
- 2.9.0
- 2.9.1
- Plages de versions concernées
- ECOSYSTEM: ≥ 2.0.0b1, < 2.44.0
Mettez à jour vers 2.44.0
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
- 1.106.0
- 1.107.0
- 1.107.1
- 1.107.2
- 1.107.4
- 1.107.5
- 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: ≥ 1.77.0, < 1.107.6
Mettez à jour vers 1.107.6
pydantic-ai-slim PyPI
- Versions du logiciel
- 2.0.0
- 2.0.0b1
- 2.0.0b2
- 2.0.0b3
- 2.0.0b4
- 2.0.0b5
- 2.0.0b6
- 2.0.0b7
- 2.1.0
- 2.10.0
- 2.11.0
- 2.12.0
- 2.13.0
- 2.14.0
- 2.14.1
- 2.15.0
- 2.16.0
- 2.17.0
- 2.18.0
- 2.19.0
- 2.2.0
- 2.20.0
- 2.21.0
- 2.22.0
- 2.23.0
- 2.24.0
- 2.25.0
- 2.26.0
- 2.27.0
- 2.27.1
- 2.28.0
- 2.29.0
- 2.3.0
- 2.30.0
- 2.31.0
- 2.31.1
- 2.32.0
- 2.32.1
- 2.32.2
- 2.33.0
- 2.34.0
- 2.35.0
- 2.35.1
- 2.35.3
- 2.36.0
- 2.37.0
- 2.38.0
- 2.39.0
- 2.4.0
- 2.40.0
- 2.41.0
- 2.42.0
- 2.43.0
- 2.5.0
- 2.5.1
- 2.6.0
- 2.7.0
- 2.8.0
- 2.9.0
- 2.9.1
- Plages de versions concernées
- ECOSYSTEM: ≥ 2.0.0b1, < 2.44.0
Mettez à jour vers 2.44.0
pydantic-ai PyPI
- Versions du logiciel
- 1.100.0
- 1.101.0
- 1.102.0
- 1.103.0
- 1.104.0
- 1.105.0
- 1.106.0
- 1.107.0
- 1.107.1
- 1.107.2
- 1.107.4
- 1.107.5
- 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
- 2.0.0
- 2.0.0b1
- 2.0.0b2
- 2.0.0b3
- 2.0.0b4
- 2.0.0b5
- 2.0.0b6
- 2.0.0b7
- 2.1.0
- 2.10.0
- 2.11.0
- 2.12.0
- 2.13.0
- 2.14.0
- 2.14.1
- 2.15.0
- 2.16.0
- 2.17.0
- 2.18.0
- 2.19.0
- 2.2.0
- 2.20.0
- 2.21.0
- 2.22.0
- 2.23.0
- 2.24.0
- 2.25.0
- 2.26.0
- 2.27.0
- 2.27.1
- 2.28.0
- 2.29.0
- 2.3.0
- 2.30.0
- 2.31.0
- 2.31.1
- 2.32.0
- 2.32.1
- 2.32.2
- 2.33.0
- 2.34.0
- 2.35.0
- 2.35.1
- 2.35.3
- 2.36.0
- 2.37.0
- 2.38.0
- 2.39.0
- 2.4.0
- 2.40.0
- 2.41.0
- 2.42.0
- 2.43.0
- 2.5.0
- 2.5.1
- 2.6.0
- 2.7.0
- 2.8.0
- 2.9.0
- 2.9.1
- Plages de versions concernées
- ECOSYSTEM: ≥ 1.77.0, < 1.107.6 ∪ ≥ 2.0.0b1, < 2.44.0
Mettez à jour vers 1.107.6; Mettez à jour vers 2.44.0
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
- 1.106.0
- 1.107.0
- 1.107.1
- 1.107.2
- 1.107.4
- 1.107.5
- 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
- 2.0.0
- 2.0.0b1
- 2.0.0b2
- 2.0.0b3
- 2.0.0b4
- 2.0.0b5
- 2.0.0b6
- 2.0.0b7
- 2.1.0
- 2.10.0
- 2.11.0
- 2.12.0
- 2.13.0
- 2.14.0
- 2.14.1
- 2.15.0
- 2.16.0
- 2.17.0
- 2.18.0
- 2.19.0
- 2.2.0
- 2.20.0
- 2.21.0
- 2.22.0
- 2.23.0
- 2.24.0
- 2.25.0
- 2.26.0
- 2.27.0
- 2.27.1
- 2.28.0
- 2.29.0
- 2.3.0
- 2.30.0
- 2.31.0
- 2.31.1
- 2.32.0
- 2.32.1
- 2.32.2
- 2.33.0
- 2.34.0
- 2.35.0
- 2.35.1
- 2.35.3
- 2.36.0
- 2.37.0
- 2.38.0
- 2.39.0
- 2.4.0
- 2.40.0
- 2.41.0
- 2.42.0
- 2.43.0
- 2.5.0
- 2.5.1
- 2.6.0
- 2.7.0
- 2.8.0
- 2.9.0
- 2.9.1
- Plages de versions concernées
- ECOSYSTEM: ≥ 1.77.0, < 1.107.6 ∪ ≥ 2.0.0b1, < 2.44.0
Mettez à jour vers 1.107.6; Mettez à jour vers 2.44.0
Sources originales
- https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-fpf4-vwcp-v4hp
- https://github.com/pydantic/pydantic-ai/pull/8397
- https://github.com/pydantic/pydantic-ai/pull/8399
- https://github.com/pydantic/pydantic-ai/pull/8418
- https://github.com/pydantic/pydantic-ai/pull/84332
- https://github.com/pydantic/pydantic-ai/pull/8434
- https://github.com/pydantic/pydantic-ai/commit/2faa6181d8a17d83bc9516d035c5270db8730fa0
- https://github.com/pydantic/pydantic-ai/commit/9cdc952e4c3319e85a3e04f2de49fbbb765bd38b
- https://github.com/pydantic/pydantic-ai/commit/a93ea5226be1e93ae13131ae3f22287190411389
- https://github.com/pydantic/pydantic-ai/commit/c3fd1cc1f15fdbf750d78e4e3ec1e8b4d6a3d920
- https://github.com/pydantic/pydantic-ai/commit/fb92ccfc3ca2735dab877e2ed73856681bf72ad1
- https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.6
- https://github.com/pydantic/pydantic-ai/releases/tag/v2.44.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-107290