Is CVE-2026-46580 actively exploited?

No active exploitation of CVE-2026-46580 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-46580 be exploited remotely?

Yes. CVE-2026-46580 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-46580?

CVE-2026-46580 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2026-46580

CWE-829Published: June 18, 2026· Updated: Jun 22, 2026

8.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2026-46580 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.