Description
In Eclipse Theia versions prior to 1.71.0, the AI chat agent processed workspace file and directory names as part of its prompt context without distinguishing them from system instructions. An attacker could craft a malicious repository with adversarial directory or file names that, when analyzed by the AI agent, would cause the agent to follow attacker-controlled instructions (indirect prompt injection). Combined with other AI chat features available in untrusted workspaces, this enabled attack chains leading to data exfiltration via Markdown image rendering or arbitrary command execution via task definitions.
Published: 2026-06-18
Score: 8.4 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-3jww-hxqj-wfq2 [Eclipse Theia] Indirect Prompt Injection via Adversarial Workspace File and Directory Names in AI Chat
History

Thu, 18 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
Title Indirect Prompt Injection in Eclipse Theia AI Chat Leading to Data Exfiltration and Command Execution

Thu, 18 Jun 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Eclipse
Eclipse theia
Vendors & Products Eclipse
Eclipse theia

Thu, 18 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
Description In Eclipse Theia versions prior to 1.71.0, the AI chat agent processed workspace file and directory names as part of its prompt context without distinguishing them from system instructions. An attacker could craft a malicious repository with adversarial directory or file names that, when analyzed by the AI agent, would cause the agent to follow attacker-controlled instructions (indirect prompt injection). Combined with other AI chat features available in untrusted workspaces, this enabled attack chains leading to data exfiltration via Markdown image rendering or arbitrary command execution via task definitions.
Weaknesses CWE-1427
CWE-829
References
Metrics cvssV4_0

{'score': 8.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published:

Updated: 2026-06-19T03:55:47.810Z

Reserved: 2026-05-22T07:47:58.196Z

Link: CVE-2026-44688

cve-icon Vulnrichment

Updated: 2026-06-18T15:28:12.468Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-18T19:15:02Z

Weaknesses