Same-Origin Policy for Agentic Browsers
Agentic browsers integrate autonomous AI agents into web browsers, enabling users to accomplish web tasks through natural-language instructions. The same-origin policy (SOP) is a fundamental browser security mechanism that prevents unauthorized automated cross-origin data flows induced by scripts. However, whether SOP remains effective in agentic browsers is an open question that has not been systematically studied. In this work, we bridge this gap. We first observe that an agentic browser can itself serve as an automated channel for cross-origin data flows, potentially leading to SOP violations. To investigate this phenomenon, we construct SOPBench, a benchmark for evaluating SOP violati...
| Authors | Xilong Wang, Xiaoxing Chen, Patrick Li et al. |
|---|---|
| Primary category | cs.CR |
| Published | 12 June 2026 |
| Last updated at source | 30 June 2026 |
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