CVE-2026-107292
MEDIUM
6,4
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: required
Scope: unchanged
Confidentiality: low
Integrity: high
Availability: low
Description
AI Translation Available
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.
346
Origin Validation Error
DraftCommon Consequences
Security Scopes Affected:
Access Control
Other
Potential Impacts:
Gain Privileges Or Assume Identity
Varies By Context
Applicable Platforms
Technologies:
Not Technology-Specific, Web Based
350
Reliance on Reverse DNS Resolution for a Security-Critical Action
DraftCommon Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Gain Privileges Or Assume Identity
Bypass Protection Mechanism
Applicable Platforms
All platforms may be affected
https://github.com/pydantic/pydantic-ai/commit/394cc1d31656620704a703a2daed752a…
https://github.com/pydantic/pydantic-ai/commit/871c7aeec5dfed2138655ccbccbf15c6…
https://github.com/pydantic/pydantic-ai/pull/7437
https://github.com/pydantic/pydantic-ai/pull/7438
https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.5
https://github.com/pydantic/pydantic-ai/releases/tag/v2.30.0
https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-q2xc-rrxj-58x9