chain-xss-to-takeover
Build chains from XSS into account takeover or privileged action execution.
56
64%
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Critical
Do not install without reviewing
Fix and improve this skill with Tessl
tessl review fix ./packages/decepticon/decepticon/skills/standard/analyst/chains/xss-to-takeover/SKILL.mdSecurity
2 findings: 1 critical severity, 1 high severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
E006: Malicious code pattern detected in skill scripts.
What this means
Detected high-risk code patterns in the skill content — including its prompts, tool definitions, and resources — such as data exfiltration, backdoors, remote code execution, credential theft, system compromise, supply chain attacks, and obfuscation techniques.
Why it was flagged
This document explicitly outlines an XSS-to-account-takeover attack flow (stealing session/CSRF tokens, using them to access admin accounts, and proving durable account impact), indicating clear malicious intent to exfiltrate credentials and perform unauthorized access.
W007: Insecure credential handling detected in skill instructions.
What this means
The skill handles credentials insecurely by requiring the agent to include secret values verbatim in its generated output. This exposes credentials in the agent’s context and conversation history, creating a risk of data exfiltration.
Why it was flagged
The skill explicitly instructs stealing and using session/CSRF tokens to access accounts, which implies the agent would need to handle/exfiltrate sensitive tokens and potentially include them verbatim in payloads or reports.
- Repository
- PurpleAILAB/Decepticon
- Commit
e34afba
- Audited
- Security analysis
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