CVE-2026-46580_CVE-2026-46580

8.4 / 10

HIGH

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

Description

In Eclipse Theia versions prior to 1.71.0, files matching the pattern .prompts/*.prompttemplate in a workspace were automatically loaded and could override or extend the AI agent's system prompts. An attacker could craft a malicious repository containing prompt template files that, when the workspace was opened in Theia, replaced the AI's system instructions with attacker-controlled content (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.

Basic Information

ID CVE-2026-46580

Source eclipse

Published Jun 18, 2026 at 14:26

Modified Jun 19, 2026 at 03:55

Affected Product

Vendor Eclipse Foundation

Product Eclipse Theia

Affected Versions Eclipse Foundation Eclipse Theia 0

CWE Classification

CWE-829 CWE-1427

References

gitlab.eclipse.org /security/cve-assignment/-/work_items/114

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    "published": "2026-06-18T14:26:59.389Z",
    "modified": "2026-06-19T03:55:46.723Z",
    "type": "cve",
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