Eclipse theia

This hub aggregates every CVE we track for Eclipse theia, a product in the oss libraries space. Use it to gauge the current risk picture and drill into individual advisories.

Severity distribution

Monthly trend

The 10 most recently published vulnerabilities affecting Eclipse theia.

• CVE-2026-44691In 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 requiring workspace trust. An attacker c...8.8Jun 18, 2026
• CVE-2026-22551In 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 without restriction. Combined with prompt ...6.5Jun 18, 2026
• CVE-2026-46580In Eclipse Theia versions prior to 1.71.0, files matching the pattern .prompts/*.prompttemplate in a workspace were automatically loaded and could override or extend the AI agent's system prompts. ...8.8Jun 18, 2026
• CVE-2026-44688In 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 them from system instructions. An atta...8.8Jun 18, 2026
• CVE-2021-34436In Eclipse Theia 0.1.1 to 0.2.0, it is possible to exploit the default build to obtain remote code execution (and XXE) via the theia-xml-extension. This extension uses lsp4xml (recently renamed to ...9.8Sep 2, 2021
• CVE-2021-34435In Eclipse Theia 0.3.9 to 1.8.1, the "mini-browser" extension allows a user to preview HTML files in an iframe inside the IDE. But with the way it is made it is possible for a previewed HTML file t...8.8Sep 1, 2021
• CVE-2021-28162In Eclipse Theia versions up to and including 0.16.0, in the notification messages there is no HTML escaping, so Javascript code can run.6.1Mar 12, 2021
• CVE-2021-28161In Eclipse Theia versions up to and including 1.8.0, in the debug console there is no HTML escaping, so arbitrary Javascript code can be injected.6.1Mar 12, 2021
• CVE-2020-27224In Eclipse Theia versions up to and including 1.2.0, the Markdown Preview (@theia/preview), can be exploited to execute arbitrary code.9.6Feb 24, 2021
• CVE-2019-17636In Eclipse Theia versions 0.3.9 through 0.15.0, one of the default pre-packaged Theia extensions is "Mini-Browser", published as "@theia/mini-browser" on npmjs.com. This extension, for its own need...8.1Mar 10, 2020