CVE-2026-44688
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.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.4
- CVSS 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
- EPSS probability
- 0.51%
- CWE
- CWE-1427, CWE-829
- Published
- 2026-06-18
- Last modified
- 2026-06-20
Affected products
- Eclipse Foundation Eclipse Theia
Weakness type
Related vulnerabilities
- CVE-2026-70331 — Microsoft Edge for iOS Spoofing Vulnerability
- CVE-2026-78379 — Consent bypass in python_repl tool via batch kwargs forwarding in Amazon Strands Agents Tools
- CVE-2026-75130 — Context7 2.1.2 Prompt Injection via Custom AI Instructions
- CVE-2026-21832 — HCL AION is affected by multiple security vulnerabilities.
- CVE-2026-18733 — Prompt injection bypasses shell tool consent gate in Strands Agents Tools
- CVE-2026-15077 — Improper Neutralization of Input Used for LLM Prompting in GitLab
- CVE-2026-46580 — In Eclipse Theia versions prior to 1.71.0, files matching the pattern .prompts/*.prompttemplate in...
- CVE-2026-44717 — MCP Calculate Server: Prompt Injection to RCE