ResearchResearch paperSafety & Alignment · Robotics & Embodied AI · Agents & Tool Use1 source · Oct 7, 2026

Adversarial Images Hijack Web Agents from Visual Grounding to Browser Execution

To address this gap, we formulate red teaming for vision-grounded web agents as an end-to-end grounding-to-execution problem, and introduce WebMirage, a framework that crafts localized visual perturbations that cause agents to select attacker-controlled content and execute the corresponding browser action across varying webpage renderings.

Key points

  • Modern web agents built on large vision-language models process webpages, select relevant UI elements, and translate model outputs into browser actions.
  • Existing visual red-teaming approaches use adversarial visual content to manipulate this process.
  • Consequently, model-level success does not establish control over browser execution and cannot reliably characterize end-to-end agent robustness.
  • We evaluate WebMirage across four agent configurations and six VLM backbones on 2,250 tasks covering 13 public websites and a sandbox benchmark.

Sources (1)

  • [1]Adversarial Images Hijack Web Agents from Visual Grounding to Browser Execution
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 7, 12:05 AM
    To address this gap, we formulate red teaming for vision-grounded web agents as an end-to-end grounding-to-execution problem, and introduce WebMirage, a framework that crafts localized visual perturbations that cause agents to select attacker-controlled content and execute the corresponding browser action across varying webpage renderings.
    Modern web agents built on large vision-language models process webpages, select relevant UI elements, and translate model outputs into browser actions.

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