CVE-2026-22551

State: Published
Severity: 6.7 Medium
Published: Jun 18, 2026
Updated: Jun 18, 2026
Reserved: May 22, 2026

Description

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. Combined with prompt injection in a malicious workspace, an attacker could induce the AI agent to construct image URLs encoding sensitive information from the workspace or conversation context, exfiltrating it to attacker-controlled servers. The workspace trust enforcement introduced in v1.71.0 mitigates the documented attack chain by disabling AI features in untrusted workspaces.

Scores

CVSS	Score	Vector	Source
4.0	6.7 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	eclipse

Weaknesses

CWE-201 Insertion of Sensitive Information Into Sent Data
CWE-829 Inclusion of Functionality from Untrusted Control Sphere

Affected Products

Product	Versions
Eclipse TheiaEclipse Foundation	before 1.71.0Affected

References

https://gitlab.eclipse.org/security/cve-assignment/-/work_items/115

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