CVE-2026-108595

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/pulseaiclub/phi
https://github.com/pulseaiclub/phi/blob/5b3cb440a7c58115ef64283a737a43299f2805a4/internal/agent/engine_runner.go#L52-L60
https://github.com/pulseaiclub/phi/blob/5b3cb440a7c58115ef64283a737a43299f2805a4/internal/tools/agenttool/agent.go#L106-L120
https://hackmd.io/@haind/phi-subagent-workdir-workspace-escape
https://www.vulncheck.com/advisories/phi-0.3.0-through-0.28.4-permission-bypass-via-agent-spawn-workdir
https://hackmd.io/@haind/phi-subagent-workdir-workspace-escape

Configurations

No configuration.

History

13 Oct 2026, 19:18

Type	Values Removed	Values Added
References	~~() https://hackmd.io/@haind/phi-subagent-workdir-workspace-escape -~~	() https://hackmd.io/@haind/phi-subagent-workdir-workspace-escape -

10 Oct 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-10 19:16

Updated : 2026-10-16 19:21

NVD link : CVE-2026-108595

Mitre link : CVE-2026-108595

CVE.ORG link : CVE-2026-108595

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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