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saml

SAML 2.0 attacks — XSW (XML Signature Wrapping) variants 1-8, comment injection, signature stripping, assertion forgery, IdP metadata abuse.

61

Quality

72%

Does it follow best practices?

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SecuritybySnyk

Critical

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tessl review fix ./packages/decepticon/decepticon/skills/standard/exploit/web/saml/SKILL.md
SKILL.md
Quality
Evals
Security

Security

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.

Critical

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 is an explicit offensive SAML attack playbook providing step-by-step techniques and tools to bypass SSO, forge assertions, and impersonate users.

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High

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 playbook explicitly instructs decoding, modifying, and documenting captured SAMLResponse values (echo "$SAMLResponse_base64", produce/document modified SAMLResponse and resulting session), which requires the LLM to handle and potentially output sensitive SAML assertions/tokens verbatim.

Low

Low-risk findings.

1 low severity finding. Worth noting, but not necessarily harmful.

Low

W011: Third-party content exposure detected (indirect prompt injection risk).

What this means

The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.

Why it was flagged

This skill’s required workflow is a SAML attack playbook that instructs the operator to capture and decode outsider-authored runtime HTTP content (victim `SAMLResponse`/`SAMLRequest` parameters and SP/IdP metadata), which the operator then copies into tools like Burp/SAML Raider for XML parsing—thus free-form outsider text can enter the agent/LLM context via those decoded message contents.

Repository
PurpleAILAB/Decepticon
Audited
Security analysis
Snyk

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