Missing Origin Validation in WebSockets Affecting @theia/terminal package, versions <1.73.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-THEIATERMINAL-17810711
- published3 Jul 2026
- disclosed3 Jul 2026
- creditAnwarAyoob
Introduced: 3 Jul 2026
NewCVE-2026-10054 (opens in a new tab)How to fix?
Upgrade @theia/terminal to version 1.73.0 or higher.
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 can execute arbitrary operating system commands and access their output by enticing a user to visit a malicious web page while a vulnerable instance is running.