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, for its own needs, exposes a HTTP endpoint that allows to read the content of files on the hosts filesystem, given their path, without restrictions on the requesters origin. This design is vulnerable to being exploited remotely through a DNS rebinding attack or a drive-by download of a carefully crafted exploit.

Affected Packages

npm @theia/mini-browser

Affected versions: 0.3.9 (fixed in 0.16.0)

Related CVEs

CVE-2019-17636

Key Information

GHSA ID

GHSA-f7vx-j8mp-3h2x

Published

April 13, 2021 3:18 PM

Last Modified

March 29, 2021 10:11 PM

CVSS Score

7.5 /10

Primary Ecosystem

npm

Primary Package

@theia/mini-browser

GitHub Reviewed

✓ Yes

Dataset

Last updated: November 25, 2025 6:29 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.