Description
Phi 0.3.0 through 0.28.4 contains a permission bypass vulnerability that allows spawned sub-agents to escape workspace_only_writes and readonly mode by supplying an unchecked workdir to agent_spawn. Attackers can plant prompt-injected instructions in processed content so the agent spawns a worker rooted elsewhere, causing unapproved file writes anywhere the user can write.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| pulseaiclub | phi | 0.3.0 – ≤ 0.28.4 | — |
References
- https://hackmd.io/@haind/phi-subagent-workdir-workspace-escape third-party-advisory
- https://github.com/pulseaiclub/phi/blob/5b3cb440a7c58115ef64283a737a43299f2805a4/internal/tools/agenttool/agent.go#L106-L120 technical-description
- https://github.com/pulseaiclub/phi/blob/5b3cb440a7c58115ef64283a737a43299f2805a4/internal/agent/engine_runner.go#L52-L60 technical-description
- https://github.com/pulseaiclub/phi product
- VulnCheck Advisory: Phi 0.3.0 through 0.28.4 Permission Bypass via agent_spawn Workdir third-party-advisory