Decepticon is an autonomous hacking agent for red teams. Versions prior to 1.1.17 wrap web crawl results — the output of agent reconnaissance against target services — into LLM messages without neutralizing ChatML special-token literals. Under the BYOK (Bring Your Own Key) deployment model, users configure their own LLM credentials to any OpenAI-compatible endpoint. Most open-source and self-deployed model providers (vLLM, SGLang, Ollama, LM Studio, text-generation-webui, etc.) do not filter special-token literals from user content in their default configurations. Those literals are parsed into structural role-boundary token IDs, meaning an attacker string planted in a target web page forges a new operator turn the model treats as authoritative, bypassing Decepticon's agent guardrails and resulting in arbitrary command execution inside the Kali Linux sandbox. Version 1.1.17 patches the issue.
History

Fri, 25 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 25 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Bittersecurity
Bittersecurity decepticon
Bittersecurity decepticon-core
Bittersecurity decepticon-sdk
Vendors & Products Bittersecurity
Bittersecurity decepticon
Bittersecurity decepticon-core
Bittersecurity decepticon-sdk

Thu, 24 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
Description Decepticon is an autonomous hacking agent for red teams. Versions prior to 1.1.17 wrap web crawl results — the output of agent reconnaissance against target services — into LLM messages without neutralizing ChatML special-token literals. Under the BYOK (Bring Your Own Key) deployment model, users configure their own LLM credentials to any OpenAI-compatible endpoint. Most open-source and self-deployed model providers (vLLM, SGLang, Ollama, LM Studio, text-generation-webui, etc.) do not filter special-token literals from user content in their default configurations. Those literals are parsed into structural role-boundary token IDs, meaning an attacker string planted in a target web page forges a new operator turn the model treats as authoritative, bypassing Decepticon's agent guardrails and resulting in arbitrary command execution inside the Kali Linux sandbox. Version 1.1.17 patches the issue.
Title Decepticon: Role-boundary forgery via ChatML special-token literals in web crawl output composed into LLM context
Weaknesses CWE-74
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-09-24T17:40:51.248Z

Updated: 2026-09-24T18:00:43.383Z

Reserved: 2026-07-10T18:59:00.046Z

Link: CVE-2026-61732

cve-icon Vulnrichment

Updated: 2026-09-24T17:59:40.283Z

cve-icon NVD

Status : Deferred

Published: 2026-09-24T18:17:15.860

Modified: 2026-09-30T17:32:07.107

Link: CVE-2026-61732

cve-icon Redhat

No data.