What is CVE-2026-10055?

CVE-2026-10055 is a high-severity vulnerability in Eclipse Foundation Theia, classified under Information Disclosure. CVSS score: 8.5/10. Published 2026-07-03.

How severe is CVE-2026-10055?

High severity. CVSS v3 base score is 8.5 out of 10.

SSRF in Eclipse Foundation Theia

CVE-2026-10055

In Eclipse Theia since version 1.26.0, the backend /services/request-service RPC accepts an attacker-controlled URL from any client connected to the standard /services messaging endpoint, performs the HTTP request server-side, and returns…

Vulnerability class: Information Disclosure

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.

Affected products

Eclipse Foundation Theia — versions 1.26.0

Weakness classification (CWE)

CWE-200 — Information Disclosure
CWE-918 — Server-Side Request Forgery (SSRF)

References

emo@eclipse.org
emo@eclipse.org

Frequently asked questions

What is CVE-2026-10055?: CVE-2026-10055 is a high-severity vulnerability in Eclipse Foundation Theia, classified under Information Disclosure. CVSS score: 8.5/10. Published 2026-07-03.
How severe is CVE-2026-10055?: High severity. CVSS v3 base score is 8.5 out of 10.