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I. Basic Information for CVE-2026-22218
Vulnerability Information

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Vulnerability Title
Chainlit < 2.9.4 Arbitrary File Read via /project/element
Source: NVD (National Vulnerability Database)
Vulnerability Description
Chainlit versions prior to 2.9.4 contain an arbitrary file read vulnerability in the /project/element update flow. An authenticated client can send a custom Element with a user-controlled path value, causing the server to copy the referenced file into the attacker’s session. The resulting element identifier (chainlitKey) can then be used to retrieve the file contents via /project/file/<chainlitKey>, allowing disclosure of any file readable by the Chainlit service.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Chainlit 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Chainlit是chainlit开源的一个大模型对话界面框架。 Chainlit 2.9.4之前版本存在路径遍历漏洞,该漏洞源于对/project/element更新流程中路径参数处理不当,可能导致任意文件读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
ChainlitChainlit 0 ~ 2.9.4 -
II. Public POCs for CVE-2026-22218
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III. Intelligence Information for CVE-2026-22218
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IV. Related Vulnerabilities
V. Comments for CVE-2026-22218

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