Identify and exploit authentication and session management vulnerabilities in web applications. Broken authentication consistently ranks in the OWASP Top 10 and can lead to account takeover, identity theft, and unauthorized access to sensitive systems.
50
55%
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Critical
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tessl review fix ./skills/broken-authentication/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.
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.
This document provides explicit, actionable instructions for credential theft, brute-force attacks, session hijacking, MFA/OTP bypasses, and detection-evasion techniques that can be directly abused for unauthorized access.
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.
The skill explicitly demonstrates capturing and reusing real credentials/tokens (passwords, session cookies, JWTs, reset tokens, OTPs) and shows them embedded verbatim in requests/commands, which would require an LLM-based agent to handle and output secret values directly.
Low
Low-risk findings.
1 low severity finding. Worth noting, but not necessarily harmful.
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.
SKILL.md describes a “Broken Authentication Testing” workflow that requires user-provided target URLs/accounts and then captures/analyzes HTTP responses (e.g., session cookies, login/reset responses) from that target at runtime.
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