Server-side Request Forgery (SSRF)

Overview @theia/core is a the main extension for all Theia-based applications, and provides the main framework for all dependent extensions. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the request-service process. An attacker can access sensitive...

Missing Origin Validation in WebSockets

Overview @theia/core is a the main extension for all Theia-based applications, and provides the main framework for all dependent extensions. Affected versions of this package are vulnerable to Missing Origin Validation in WebSockets via the shell-terminal and terminals/:id WebSocket endpoints whe...

Server-side Request Forgery (SSRF)

Overview @theia/request is a Theia Proxy-Aware Request Service Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the request-service process. An attacker can access sensitive internal resources by sending crafted URLs to the backend, which then performs...

Missing Origin Validation in WebSockets

Overview @theia/terminal is a Theia - Terminal Extension Affected versions of this package are vulnerable to Missing Origin Validation in WebSockets via the shell-terminal and terminals/:id WebSocket endpoints when origin validation is bypassed due to missing or manipulated headers. An attacker c...

CVE-2026-10055

In Eclipse Theia since version 1.26.0, the backend /services/request-service RPC accepts an attacker-controlled URL from any client connected to the standard /services messaging endpoint, performs the HTTP request server-side, and returns the full response body to the caller. Because the...

CVE-2026-10054

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...

CVE-2026-10055

In Eclipse Theia since version 1.26.0, the backend /services/request-service RPC accepts an attacker-controlled URL from any client connected to the standard /services messaging endpoint, performs the HTTP request server-side, and returns the full response body to the caller. Because the...

CVE-2026-10055

In Eclipse Theia since version 1.26.0, the backend /services/request-service RPC accepts an attacker-controlled URL from any client connected to the standard /services messaging endpoint, performs the HTTP request server-side, and returns the full response body to the caller. Because the...

CVE-2026-10055

CVE-2026-10055 affects Eclipse Theia (since 1.26.0). The issue arises in the backend /services/request-service RPC, which accepts an attacker-controlled URL from any client connected to the standard /services messaging endpoint, then performs the HTTP request server-side and returns the full resp...

CVE-2026-10055

In Eclipse Theia since version 1.26.0, the backend /services/request-service RPC accepts an attacker-controlled URL from any client connected to the standard /services messaging endpoint, performs the HTTP request server-side, and returns the full response body to the caller. Because the...

CVE-2026-10054

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...

CVE-2026-10054

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...

CVE-2026-10054

The CVE-2026-10054 entry concerns Eclipse Theia (1.8.1 and later) where the browser backend exposes privileged terminal RPC over WebSocket (/services/shell-terminal, /services/terminals/:id) without proper service-level authentication. The vulnerability stems from fail-open WebSocket origin valid...

CVE-2026-10054

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...

PT-2026-55524

Name of the Vulnerable Software and Affected Versions Eclipse Theia versions 1.26.0 and later Description The backend /services/request-service RPC accepts a URL controlled by an attacker from any client connected to the standard /services messaging endpoint. The server performs the HTTP request...

PT-2026-55523

Name of the Vulnerable Software and Affected Versions Eclipse Theia versions 1.8.1 and later Description The browser backend exposes privileged terminal RPC over WebSocket endpoints '/services/shell-terminal' and '/services/terminals/:id' without service-level authentication. The WebSocket origin...

Linux Distros Unpatched Vulnerability : CVE-2026-46580

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Eclipse Theia versions prior to 1.71.0, files matching the pattern .prompts/.prompttemplate in a workspace were automatically loaded and could override or...

Linux Distros Unpatched Vulnerability : CVE-2026-44691

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Eclipse Theia versions prior to 1.69.0, custom task definitions in workspace files e.g. .theia/tasks.json, .vscode/tasks.json could be executed without...

Linux Distros Unpatched Vulnerability : CVE-2026-44688

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Eclipse Theia versions prior to 1.71.0, the AI chat agent processed workspace file and directory names as part of its prompt context without distinguishing...

Linux Distros Unpatched Vulnerability : CVE-2026-22551

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Eclipse Theia versions prior to 1.71.0, the AI chat rendered Markdown image tags from AI responses, triggering HTTP requests to arbitrary external URLs witho...