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Updated 7/21/2026, database is current

Language Model Security Database

959 research findings · 1077 evaluated models

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733 entries

Matches every word across titles, descriptions, sources, affected systems, and models.

Updated 1/26/2025

This vulnerability allows attackers to bypass LLM safety mechanisms and elicit malicious content by injecting a chain of benign, semantically equivalent narrations into a seemingly innocuous article. The LLM connects these scattered narrations, effectively executing the malicious intent hidden within the seemingly benign context. This differs from previous attacks which directly embed malicious prompts, making detection by both LLMs and human reviewers more difficult.

Hidden You Malicious Goal Into Benigh Narratives: Jailbreak Large Language Models through Logic Chain Injection
Affects: BERT, GPT, GPT-4 +1 more

Source: arXiv

Large Language Models (LLMs) are vulnerable to the "Crescendo" multi-turn jailbreak attack. This attack uses a series of benign, escalating prompts to gradually lead the LLM into generating harmful or disallowed content, bypassing built-in safety mechanisms. The attack leverages the LLM's tendency to follow conversational patterns and build upon previous responses, making it difficult to detect based solely on individual prompts.

Great, now write an article about that: The crescendo multi-turn llm jailbreak attack
Affects: Claude 2, Claude 3 Opus, Claude 3.5 Sonnet +6 more

Source: arXiv

Large Language Models (LLMs) are vulnerable to a vocabulary attack where carefully selected words from the model's vocabulary, identified using an optimization procedure and embeddings from another LLM, are inserted into user prompts. This manipulation can cause the target LLM to generate specific undesired outputs (goal hijacking), such as offensive language or false information, even with minimal word insertions. The attack is difficult to detect because the inserted words may appear…

Vocabulary Attack to Hijack Large Language Model Applications
Affects: Flan-T5 XXL, Llama 2 7B Chat, Llama 2 Chat +1 more

Source: arXiv

A color-aware attack, Self Color Testing-based Substitution (SCTS), bypasses watermarking mechanisms in LLMs designed to identify AI-generated text. SCTS exploits the LLM's compliance with instructions to infer the "color" (green/red token classification) of tokens, allowing for targeted substitution of watermarked tokens with non-watermarked tokens, thus evading watermark detection. The attack is particularly effective against watermarks that utilize logit perturbation to bias token selection.

Bypassing LLM Watermarks with Color-Aware Substitutions

Source: arXiv

Updated 12/28/2024

Large Language Models (LLMs) are vulnerable to a novel black-box jailbreak attack, termed "Distraction-based Adversarial Prompts" (DAP). DAP leverages the distractibility and over-confidence of LLMs by concealing malicious queries within complex, unrelated prompts. A memory-reframing mechanism further redirects the LLM's attention away from the distracting context and toward the malicious query, causing the model to bypass safety mechanisms and generate harmful or unintended outputs.

Tastle: Distract large language models for automatic jailbreak attack
Affects: GPT-3.5 Turbo, GPT-3.5-1106), GPT-4 +4 more

Source: arXiv

Updated 12/29/2024

Large Language Models (LLMs) exhibit vulnerability to a novel jailbreak attack, "ArtPrompt," which leverages the models' poor ability to recognize ASCII art representations of words. By replacing sensitive words in a prompt with their ASCII art equivalents, the attacker bypasses safety filters designed to prevent the generation of harmful content.

Artprompt: Ascii art-based jailbreak attacks against aligned llms
Affects: GPT-3.5 Turbo, GPT-4

Source: arXiv

A vulnerability in several large language models (LLMs) allows attackers to bypass safety restrictions ("jailbreaking") by employing a Foot-in-the-Door (FITD) technique. This involves progressively escalating prompts, starting with innocuous requests and gradually leading to the elicitation of harmful or restricted information. The LLM's tendency towards cognitive consistency makes it more likely to respond to subsequent, increasingly sensitive prompts after initially agreeing to less harmful…

Foot In The Door: Understanding Large Language Model Jailbreaking via Cognitive Psychology
Affects: Chatglm-2 (chatglm2-6B), Chatglm-3 (chatglm3-6B), Claude 2.1 +5 more

Source: arXiv

Updated 3/4/2025

Large Language Models (LLMs) with advanced reasoning capabilities are vulnerable to jailbreaking attacks using novel, complex, and layered custom encryption schemes. LLMs' ability to decipher these ciphers, exceeding the capabilities of less sophisticated models, enables attackers to bypass existing safety mechanisms by encoding malicious prompts.

When" Competency" in Reasoning Opens the Door to Vulnerability: Jailbreaking LLMs via Novel Complex Ciphers
Affects: Gemini 1.5 Flash, GPT-4o, Llama 3.1 70B Instruct +1 more

Source: arXiv

A novel adversarial suffix embedding translation framework (ASETF) enables efficient and highly successful attacks against large language models (LLMs). ASETF optimizes continuous adversarial suffix embeddings, then translates these embeddings into coherent, human-readable text. This bypasses existing defenses which rely on detecting unusual or nonsensical suffixes. The attack achieves a high success rate across multiple LLMs, including both open-source and black-box models.

ASETF: A Novel Method for Jailbreak Attack on LLMs through Translate Suffix Embeddings
Affects: Alpaca 7B (Safe-RLHF), ChatGLM3 6B, GPT-3.5 Turbo +6 more

Source: arXiv

Large Language Models (LLMs) are vulnerable to efficient adversarial attacks using Projected Gradient Descent (PGD) on a continuously relaxed input prompt. This attack bypasses existing alignment methods by crafting adversarial prompts that induce the model to produce undesired or harmful outputs, significantly faster than previous state-of-the-art discrete optimization methods. The effectiveness stems from carefully controlling the error introduced by the continuous relaxation of the discrete…

Attacking large language models with projected gradient descent
Affects: Falcon 7B, Falcon 7B Instruct, Vicuna 7B v1.3

Source: arXiv

Research methodology

Entries summarize publicly available primary-source security research. Model names reflect only systems explicitly evaluated by the cited paper, and measurements are research-reported unless independent verification is stated.