CVE-2026-25640— pydantic-ai 跨站脚本漏洞

Pydantic AI affected by Stored XSS via Path Traversal in Web UI CDN URL

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.34.0 to before 1.51.0, a path traversal vulnerability in the Pydantic AI web UI allows an attacker to serve arbitrary JavaScript in the context of the application by crafting a malicious URL. In affected versions, the CDN URL is constructed using a version query parameter from the request URL. This parameter is not validated, allowing path traversal sequences that cause the server to fetch and serve attacker-controlled HTML/JavaScript from an arbitrary source on the same CDN, instead of the legitimate chat UI package. If a victim clicks the link or visits it via an iframe, attacker-controlled code executes in their browser, enabling theft of chat history and other client-side data. This vulnerability only affects applications that use Agent.to_web to serve a chat interface and clai web to serve a chat interface from the CLI. These are typically run locally (on localhost), but may also be deployed on a remote server. This vulnerability is fixed in 1.51.0.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

对路径名的限制不恰当(路径遍历)

pydantic-ai 跨站脚本漏洞

pydantic-ai是Pydantic开源的一个用于构建生产级应用程序和工作流的生成式AI框架。 pydantic-ai 1.34.0至1.51.0之前版本存在跨站脚本漏洞，该漏洞源于Web UI存在路径遍历，可能允许攻击者通过特制URL在应用环境中提供任意JavaScript，导致客户端数据泄露。

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