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Last analyzed 8/13/2026

Language Model Security Database

969 research findings · 1102 evaluated models

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604 entries

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

Published 10/1/2023
Analyzed 12/28/2024

Large Language Models (LLMs) are vulnerable to prompt-based jailbreaks, allowing adversaries to bypass safety guardrails and elicit undesirable outputs. The Prompt Automatic Iterative Refinement (PAIR) algorithm efficiently generates these jailbreaks using a limited number of black-box queries to the target LLM. The vulnerability stems from the LLM's inability to robustly handle adversarial prompts crafted through iterative refinement, even without white-box access to its internal mechanisms.

Jailbreaking black box large language models in twenty queries
Evaluated models: Claude Instant 1.2, Claude 2.1, Gemini Pro +6 more

Source: arXiv

Published 10/1/2023
Analyzed 12/28/2024

Large Language Models (LLMs) employing alignment techniques remain vulnerable to "jailbreak" attacks. The AutoDAN technique automatically generates semantically meaningful prompts that bypass safety features and elicit malicious outputs from aligned LLMs, unlike previous methods producing nonsensical prompts easily detectable by perplexity checks. These prompts exploit weaknesses in the LLM's alignment, causing it to generate responses that violate intended safety constraints.

Autodan: Generating stealthy jailbreak prompts on aligned large language models
Evaluated models: GPT-3.5 Turbo, GPT-4

Source: arXiv

Published 10/1/2023
Analyzed 12/28/2024

Large Language Models (LLMs) are vulnerable to Compositional Instruction Attacks (CIA), where malicious prompts are embedded within seemingly harmless instructions. This allows attackers to bypass safety mechanisms and elicit harmful responses from the model, even if the individual components of the prompt would be flagged as safe. The attack exploits the model's inability to correctly identify underlying malicious intent within composite instructions.

Prompt packer: Deceiving llms through compositional instruction with hidden attacks
Evaluated models: ChatGLM2 6B, GPT-3.5 Turbo, GPT-4

Source: arXiv

Published 10/1/2023
Analyzed 12/29/2024

Large Language Models (LLMs) are vulnerable to In-Context Attacks (ICA) and susceptible to mitigation via In-Context Defense (ICD). ICA leverages a small number of harmful demonstration examples within a prompt to elicit harmful responses from the LLM, even if it is otherwise safety-aligned. ICD counteracts ICA by prepending safe demonstration examples to the prompt, effectively reducing the likelihood of harmful output. The effectiveness of both ICA and ICD is demonstrated across multiple LLMs.

Jailbreak and guard aligned language models with only few in-context demonstrations
Evaluated models: GPT-4 0613, Llama 2 7B Chat, Mistral-7B-v2 +4 more

Source: arXiv

Published 10/1/2023
Analyzed 12/28/2024

A vulnerability in large language models (LLMs) allows attackers to craft malicious prompts that induce the LLM to generate harmful content, such as fraudulent material, racist remarks, or instructions for illegal activities. The vulnerability arises from the LLM's inability to reliably distinguish between benign and malicious instructions disguised within seemingly innocuous prompts. Attackers can exploit this by leveraging techniques like obfuscation, code injection/payload splitting, and…

Attack prompt generation for red teaming and defending large language models
Evaluated models: Not reported

Source: arXiv

Published 10/1/2023
Analyzed 12/29/2024

Large Language Models (LLMs), such as GPT-4, exhibit a cross-lingual vulnerability in their safety mechanisms. Translating unsafe English prompts into low-resource languages, using readily available translation APIs like Google Translate, bypasses the LLM's safety filters and elicits harmful responses with a significantly higher success rate than attacks targeting the English language directly. The vulnerability stems from an unequal distribution of safety training data across languages…

Low-resource languages jailbreak gpt-4
Evaluated models: GPT-4

Source: arXiv

Published 10/1/2023
Analyzed 1/26/2025

A prompt-based adversarial attack, termed PromptAttack, can cause Large Language Models (LLMs) to generate incorrect outputs by manipulating the input prompt. PromptAttack crafts prompts that include the original input, an attack objective (to generate semantically similar but misclassified output), and attack guidance with instructions for character, word, or sentence-level perturbations. This allows an attacker to manipulate an LLM's response without direct access to its internal parameters…

An LLM can Fool Itself: A Prompt-Based Adversarial Attack
Evaluated models: GPT-3.5 Turbo

Source: arXiv

Published 9/1/2023
Analyzed 12/28/2024

Large Language Models (LLMs) are susceptible to automated jailbreak attacks using a fuzzing framework that generates variations of existing jailbreak prompts. This vulnerability allows bypassing built-in safety mechanisms, leading to the generation of harmful or unintended outputs. The vulnerability stems from the LLMs' inability to consistently recognize and reject semantically similar, but subtly different prompt variations generated through automated mutation techniques.

Gptfuzzer: Red teaming large language models with auto-generated jailbreak prompts
Evaluated models: Not reported

Source: arXiv

Published 9/1/2023
Analyzed 12/28/2024

A universal black-box jailbreaking vulnerability exists in Large Language Models (LLMs) due to their susceptibility to adversarial prompts crafted using a genetic algorithm (GA). The GA optimizes a universal adversarial prompt suffix that, when appended to various user inputs, causes the LLM to generate unintended and potentially harmful outputs, bypassing safety mechanisms. This attack requires no knowledge of the LLM's internal architecture or parameters.

Open sesame! universal black box jailbreaking of large language models
Evaluated models: Llama 2 7B Chat, Vicuna 7B

Source: arXiv

Published 8/1/2023
Analyzed 12/28/2024

Large Language Models (LLMs) are vulnerable to a "Chain of Utterances" (CoU) based prompt injection attack. This attack exploits the LLM's ability to engage in multi-turn conversations and role-playing, tricking it into providing harmful or unsafe responses even when presented with safety guidelines. The attack leverages a crafted conversation between two agents ("Red-LM," a malicious agent, and "Base-LM," a seemingly helpful agent) to elicit unethical responses from the Base-LM by subtly…

Red-teaming large language models using chain of utterances for safety-alignment
Evaluated models: Not reported

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.