CVE-2026-46580
CVE-2026-46580
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.4 · High · EPSS 0.5% · Fix available
- Published
- Updated
Affected products and versions
eclipse theia
- Versions
- ≥ 0, < 1.71.0: Affected (semver)
Update to 1.71.0
@theia/ai-chat-ui npm
- Affected ranges
- SEMVER: < 1.71.0
Update to 1.71.0
@theia/ai-chat npm
- Affected ranges
- SEMVER: < 1.71.0
Update to 1.71.0
@theia/ai-claude-code npm
- Affected ranges
- SEMVER: < 1.71.0
Update to 1.71.0
@theia/ai-code-completion npm
- Affected ranges
- SEMVER: < 1.71.0
Update to 1.71.0
@theia/ai-core npm
- Affected ranges
- SEMVER: < 1.71.0
Update to 1.71.0
@theia/ai-editor npm
- Affected ranges
- SEMVER: < 1.71.0
Update to 1.71.0
eclipse Ubuntu:16.04:LTS
- Versions
- 3.8.1-8
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
eclipse Ubuntu:18.04:LTS
- Versions
- 3.8.1-10
- 3.8.1-11
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published