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eclipse / theia CVEs

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11 CVEs tagged to eclipse / theia2 Critical, 5 High, 4 Medium, 0 Low, 0 Unrated.

CVE-2026-46580

Published Jun 18, 2026

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 extend the AI agent'…

CVSS 8.4 · High
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-44691

Published Jun 18, 2026

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 requiring workspace tr…

CVSS 8.4 · High
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-44688

Published Jun 18, 2026

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 them from system ins…

CVSS 8.4 · High
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-22551

Published Jun 18, 2026

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 without restriction. Com…

CVSS 6.7 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2021-41038

Published Nov 10, 2021

In versions of the @theia/plugin-ext component of Eclipse Theia prior to 1.18.0, Webview contents can be hijacked via postMessage().

CVSS 6.1 · Medium
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CVE-2021-34436

Published Sep 2, 2021

In 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 (re…

CVSS 9.8 · Critical
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CVE-2021-34435

Published Sep 1, 2021

In 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 pre…

CVSS 8.8 · High
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CVE-2021-28162

Published Mar 12, 2021

In Eclipse Theia versions up to and including 0.16.0, in the notification messages there is no HTML escaping, so Javascript code can run.

CVSS 6.1 · Medium
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CVE-2021-28161

Published Mar 12, 2021

In 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.

CVSS 6.1 · Medium
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CVE-2020-27224

Published Feb 24, 2021

In Eclipse Theia versions up to and including 1.2.0, the Markdown Preview (@theia/preview), can be exploited to execute arbitrary code.

CVSS 9.6 · Critical
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CVE-2019-17636

Published Mar 10, 2020

In 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…

CVSS 8.1 · High
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