Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.34.0 until 2.30.0, the Agent.to_web() and clai web development chat server does not validate the Host header, allowing a website visited by a developer to use DNS rebinding to reach a loopback-hosted agent as a same-origin service. The hostile page can read the served UI and submit chat requests that execute agent tools with the local process's privileges and credentials, causing data disclosure or unwanted side effects.
Binding to localhost, Origin checks, and CSRF tokens do not prevent the same-origin DNS rebinding path. This issue is fixed in versions 1.107.5 and 2.30.0.
Характеристики атаки
Способ атаки
По сети
Атака возможна удалённо
Сложность
Высокая
Сложно эксплуатировать
Нужны права
Не требуются
Права не нужны
Участие пользователя
Требуется
Нужно действие пользователя
Последствия
Конфиденциальность
Низкое
Частичная утечка данных
Целостность
Высокое
Полная модификация данных
Доступность
Низкое
Частичное нарушение работы
Строка CVSS v3.1
Тип уязвимости (CWE)
Ссылки 7
https://github.com/pydantic/pydantic-ai/commit/394cc1d31656620704a703a2daed752a…
security-advisories@github.com
https://github.com/pydantic/pydantic-ai/commit/871c7aeec5dfed2138655ccbccbf15c6…
security-advisories@github.com
https://github.com/pydantic/pydantic-ai/pull/7437
security-advisories@github.com
https://github.com/pydantic/pydantic-ai/pull/7438
security-advisories@github.com
https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.5
security-advisories@github.com
https://github.com/pydantic/pydantic-ai/releases/tag/v2.30.0
security-advisories@github.com
https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-q2xc-rrxj-58x9
security-advisories@github.com