Last analyzed Sep 9, 2026

Language Model Security Database

Explore primary-source AI security research, evaluated models, attack techniques, and defensive evidence.

985 research findings · 1119 evaluated models

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Single-interaction poisoning of agent memory

Published Aug 24, 2026Analyzed Sep 9, 2026Source: arXiv

A stored interaction can later steer a memory-augmented agent's answer without direct memory-store access. The study evaluates persistent response manipulation in MemoryOS and MemGPT.

InjecMEM: Memory Injection Attack on LLM Agent Memory Systems

Evaluated models: Qwen 2.5 7B Instruct, Qwen 2.5 1.5B Instruct, Qwen 2.5 3B Instruct+3 more

Qwen 2.5 7B Instruct
Qwen 2.5 1.5B Instruct
Qwen 2.5 3B Instruct
Qwen 2.5 14B Instruct
Llama 3.1 8B Instruct
Mistral 7B Instruct v0.3

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.

Discovery and publication are separate: new papers enter a candidate queue, then require human review and explicit approval before publication. Updates follow that review process, not a guaranteed daily publishing schedule. “Last analyzed” is the newest analysis date among published entries; it does not mean that all recent research has been covered.