UBUNTU-CVE-2026-46580

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Source
https://ubuntu.com/security/CVE-2026-46580
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-46580.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-46580
Upstream
Published
2026-06-18T16:16:00Z
Modified
2026-06-24T11:01:07Z
Severity
  • 8.4 (High) CVSS_V4 - 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 CVSS Calculator
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:16.04:LTS / eclipse

Package

Name
eclipse
Purl
pkg:deb/ubuntu/eclipse?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.8.1-8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "eclipse",
            "binary_version": "3.8.1-8"
        },
        {
            "binary_name": "eclipse-jdt",
            "binary_version": "3.8.1-8"
        },
        {
            "binary_name": "eclipse-pde",
            "binary_version": "3.8.1-8"
        },
        {
            "binary_name": "eclipse-platform",
            "binary_version": "3.8.1-8"
        },
        {
            "binary_name": "eclipse-platform-data",
            "binary_version": "3.8.1-8"
        },
        {
            "binary_name": "eclipse-rcp",
            "binary_version": "3.8.1-8"
        },
        {
            "binary_name": "libequinox-osgi-java",
            "binary_version": "3.8.1-8"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-46580.json"

Ubuntu:18.04:LTS / eclipse

Package

Name
eclipse
Purl
pkg:deb/ubuntu/eclipse?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.8.1-10
3.8.1-11

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "eclipse",
            "binary_version": "3.8.1-11"
        },
        {
            "binary_name": "eclipse-jdt",
            "binary_version": "3.8.1-11"
        },
        {
            "binary_name": "eclipse-pde",
            "binary_version": "3.8.1-11"
        },
        {
            "binary_name": "eclipse-platform",
            "binary_version": "3.8.1-11"
        },
        {
            "binary_name": "eclipse-platform-data",
            "binary_version": "3.8.1-11"
        },
        {
            "binary_name": "eclipse-rcp",
            "binary_version": "3.8.1-11"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-46580.json"