CVE-2026-108595
Phi 0.3.0 through 0.28.4 Permission Bypass via agent_spawn Workdir
pulseaiclub phi
CVSS
6.0MediumExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 13 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.26%Chance of exploitation activity in the next 30 days, higher than 16% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- phiaffected: 0.3.0 through 0.28.4CVE List
References 5
- vulncheck.com/advisories/phi-0.3.0-through-0.28.4-permission-bypass-via-agent-spawn-workdirAdvisoryvia CVE List
- hackmd.io/@haind/phi-subagent-workdir-workspace-escapeExploitvia CVE List
- github.com/pulseaiclub/phi/blob/5b3cb440a7c58115ef64283a737a43299f2805a4/internal/tools/agenttool/agent.go#L106-L120Referencevia CVE List
- github.com/pulseaiclub/phi/blob/5b3cb440a7c58115ef64283a737a43299f2805a4/internal/agent/engine_runner.go#L52-L60Referencevia CVE List
- github.com/pulseaiclub/phiReferencevia CVE List