Auth bypass in Eclipse Foundation Theia
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 vali…
Vulnerability class: Broken Authentication
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Eclipse Foundation Theia — versions 1.8.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-10054?
- CVE-2026-10054 is a high-severity vulnerability in Eclipse Foundation Theia, classified under Missing Authentication for Critical Function. CVSS score: 8.8/10. Published 2026-07-03.
- How severe is CVE-2026-10054?
- High severity. CVSS v3 base score is 8.8 out of 10.