HarnessSafe: Evaluating Safety Across Persistent Carriers in Agent Harnesses
Modern agent harnesses persist state across tasks and sessions through persistent carriers like memory, skills, tools, and shared artifacts. However, this capability creates delayed safety risks: attacker-influenced content can cross system boundaries and later affect the execution of a benign request. Existing benchmarks typically focus on a few carriers or harnesses, while end-to-end attack-success rates reveal little about how risks propagate. To this end, we present HarnessSafe, a benchmark comprising 328 executable cases across seven persistent-carrier families and evaluated on most mainstream agent harnesses. Each case is specified as a Persistent-Risk Lifecycle that traces attacker...
| Authors | Xiao Zhang, Yusheng Wang, Yuhao Fei et al. |
|---|---|
| Primary category | cs.CR |
| Published | 7 August 2026 |
| Last updated at source | 7 August 2026 |
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