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Prompt Injection and Missing Auth Create Free LLM Abuse Vector

By PulseAugur Editorial · [1 sources] ·

A security researcher discovered a vulnerability in an AI translation API that allowed for free, unauthenticated abuse of the underlying large language model. The vulnerability stemmed from a combination of missing authentication on the API endpoint and prompt injection, where user input was directly incorporated into the model's prompt without proper sanitization. This allowed attackers to bypass translation tasks and issue arbitrary commands to the LLM, leading to a "Denial of Wallet" scenario where the service provider incurred costs for unauthorized usage. AI

IMPACT Highlights critical security risks in AI systems, emphasizing the need for robust authentication and input validation to prevent costly abuse.

RANK_REASON Security vulnerability disclosure regarding an AI product.

Read on dev.to — LLM tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Prompt Injection and Missing Auth Create Free LLM Abuse Vector

COVERAGE [1]

  1. dev.to — LLM tag TIER_1 English(EN) · Najmedine salem ·

    Prompt Injection + Missing Authentication: How I Turned an AI Translation API into a Free LLM Abuse Vector (Denial of Wallet)

    <p>**</p> <h2> Introduction </h2> <p>**</p> <p>AI-powered APIs are often treated as simple features, but in reality they are expensive systems powered by large language models.</p> <p>During an authorized security assessment, I tested an AI translation endpoint that initially loo…

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