Prompt injection vulnerability in 1millionbot Millie chatbot that occurs when a user manages to evade chat restrictions using Boolean prompt injection techniques (formulating a question in such a way that, upon receiving an affirmative response ('true'), the model executes the injected instruction), causing it to return prohibited information and information outside its intended context. Successful exploitation of this vulnerability could allow a malicious remote attacker to abuse the service for purposes other than those originally intended, or even execute out-of-context tasks using 1millionbot's resources and/or OpenAI's API key. This allows the attacker to evade the containment mechanisms implemented during LLM model training and obtain responses or chat behaviors that were originally restricted.
History

Tue, 31 Mar 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 31 Mar 2026 10:45:00 +0000

Type Values Removed Values Added
Description Prompt injection vulnerability in 1millionbot Millie chatbot that occurs when a user manages to evade chat restrictions using Boolean prompt injection techniques (formulating a question in such a way that, upon receiving an affirmative response ('true'), the model executes the injected instruction), causing it to return prohibited information and information outside its intended context. Successful exploitation of this vulnerability could allow a malicious remote attacker to abuse the service for purposes other than those originally intended, or even execute out-of-context tasks using 1millionbot's resources and/or OpenAI's API key. This allows the attacker to evade the containment mechanisms implemented during LLM model training and obtain responses or chat behaviors that were originally restricted.
Title Multiple vulnerabilities in 1millionbot Millie chatbot
First Time appeared 1millionbot
1millionbot millie Chat
Weaknesses CWE-1427
CPEs cpe:2.3:a:1millionbot:millie_chat:3.6.0:*:*:*:*:*:*:*
Vendors & Products 1millionbot
1millionbot millie Chat
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: INCIBE

Published:

Updated: 2026-03-31T13:31:06.385Z

Reserved: 2026-03-18T17:18:15.620Z

Link: CVE-2026-4399

cve-icon Vulnrichment

Updated: 2026-03-31T13:31:02.236Z

cve-icon NVD

Status : Received

Published: 2026-03-31T11:16:14.103

Modified: 2026-03-31T11:16:14.103

Link: CVE-2026-4399

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.