CVE-2026-10054— Eclipse Theia 输入验证错误漏洞

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In affected versions of Eclipse Theia (1.8.1 and later), the browser backend exposes privileged terminal RPC over WebSocket (/services/shell-terminal, /services/terminals/:id) without service-level authentication. WebSocket origin validation in @theia/core is fail-open: connections are accepted when the Origin header is missing or when no THEIA_HOSTS allowlist is configured (the default). The Socket.IO integration additionally replaces the real Origin header with a client-supplied fix-origin header that an attacker can control or omit. As a result, a foreign-origin web page visited by a user with a running Theia instance can open the /services WebSocket namespace, invoke terminal creation, attach to the resulting terminal data channel, execute arbitrary OS commands, and read their output. This affects both local developer setups (drive-by attack) and hosted or tunneled deployments without strong external authentication. A fix is in development that enforces same-origin validation by default, removes trust in the fix-origin header, gates HTTP and WebSocket access on a SameSite=Strict; HttpOnly connection-token cookie, and sanitizes shell terminal creation options.

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

CWE-1385

Eclipse Theia 输入验证错误漏洞

Eclipse theia是美国Eclipse基金会开源的一个可扩展的开发环境框架。 Eclipse Theia 1.8.1版本至1.73.0之前版本存在安全漏洞，该漏洞源于缺少服务级身份验证，且WebSocket来源验证失效，可能导致攻击者创建并附加到终端、执行任意OS命令并读取输出。

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