CVE-2026-44688

Command execution and data exfiltration via workspace names

Published Jun 18, 2026 · Updated Jun 18, 2026

Indirect prompt injection in Eclipse Theia before 1.71.0 allows attackers to execute commands or exfiltrate data through a malicious workspace. The AI chat agent incorporates attacker-chosen file and directory names into prompt context without separating them from trusted instructions. Exploitation requires a user to open the untrusted workspace and invoke AI features that process those names; task definitions or Markdown rendering complete the reported attack chains.

CVSS severity8.4
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Indirect prompt injection in Eclipse Theia before 1.71.0 allows attackers to execute commands or exfiltrate data through a malicious workspace. The AI chat agent incorporates attacker-chosen file and directory names into prompt context without separating them from trusted instructions. Exploitation requires a user to open the untrusted workspace and invoke AI features that process those names; task definitions or Markdown rendering complete the reported attack chains.

The record

CVE
CVE-2026-44688
Published
Jun 18, 2026
Updated
Jun 18, 2026
Vendor
The Eclipse Foundation
Product
Eclipse Theia
Classifications
CWE-829, CWE-1427, T1059, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.71.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse Theiaversion=0 <1.71.0

Published CVSS scores

8.4Eclipse FoundationCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-829Inclusion of Functionality from Untrusted Control Sphere
CWE-1427Improper Neutralization of Input Used for LLM Prompting
T1059Command and Scripting Interpreter
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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