One-Relation Attack: Manipulating LLM Agents via Inferential Warrants

# One-Relation Attack: Manipulating LLM Agents via Inferential Warrants

https://gcdradar.vercel.app/incidents/one-relation-attack-manipulating-llm-agents-via-inferential · AIR-2026-1422 · closed 2026-11-03

- Lane: Research
- Severity: 1 (Research / proof of concept)
- Fix status: Fix status unknown
- First reported: 2026-10-20
- AI role: Attack on AI

## Summary

Researchers introduced the one-relation attack, demonstrating that a single targeted sentence can mislead LLM agents and alter their reasoning outcomes. Evaluations across eighteen models showed successful manipulation in biomedical inference and vulnerability tasks.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-10-20: The One-Pixel of Reasoning: One Truthful Relation Is Enough to Mislead LLM Agents (https://arxiv.org/abs/2610.24873)

## Sources

- 2026-10-20 arXiv: The One-Pixel of Reasoning: One Truthful Relation Is Enough to Mislead LLM Agents https://arxiv.org/abs/2610.24873

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.