CVE-2026-108595 (GCVE-0-2026-108595)

Vulnerability from cvelistv5 – Published: 2026-10-10 18:16 – Updated: 2026-10-10 18:16
VLAI
Title
Phi 0.3.0 through 0.28.4 Permission Bypass via agent_spawn Workdir
Summary
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.
Severity
6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE
  • CWE-863 - Incorrect Authorization
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5497 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
pulseaiclub phi Affected: 0.3.0 , ≤ 0.28.4 (semver)
guessed Create a notification for this product.
Date Public
2026-10-09 00:00
Credits
HaiND from the Post and Telecommunication Institute of Technology
Show details on NVD website
To clipboard 

{
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          "packageURL": "pkg:golang/github.com/pulseaiclub/phi",
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          "vendor": "pulseaiclub",
          "versions": [
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              "status": "affected",
              "version": "0.3.0",
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      "credits": [
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          "type": "finder",
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        }
      ],
      "metrics": [
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            "baseScore": 6,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
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            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
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            "confidentialityImpact": "NONE",
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      "problemTypes": [
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          "descriptions": [
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              "description": "Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-10T18:16:58.378Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "tags": [
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          "url": "https://hackmd.io/@haind/phi-subagent-workdir-workspace-escape"
        },
        {
          "tags": [
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          "url": "https://github.com/pulseaiclub/phi/blob/5b3cb440a7c58115ef64283a737a43299f2805a4/internal/tools/agenttool/agent.go#L106-L120"
        },
        {
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          "url": "https://github.com/pulseaiclub/phi/blob/5b3cb440a7c58115ef64283a737a43299f2805a4/internal/agent/engine_runner.go#L52-L60"
        },
        {
          "tags": [
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          "url": "https://github.com/pulseaiclub/phi"
        },
        {
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          "tags": [
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          "url": "https://www.vulncheck.com/advisories/phi-0.3.0-through-0.28.4-permission-bypass-via-agent-spawn-workdir"
        }
      ],
      "title": "Phi 0.3.0 through 0.28.4 Permission Bypass via agent_spawn Workdir",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-108595",
    "datePublished": "2026-10-10T18:16:58.378Z",
    "dateReserved": "2026-10-10T18:08:12.414Z",
    "dateUpdated": "2026-10-10T18:16:58.378Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-10-11",
      "epss": "0.0026",
      "percentile": "0.16303"
    },
    "nvd": {
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                    "versionType": "semver"
                  }
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        "cveTags": [],
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          }
        ],
        "id": "CVE-2026-108595",
        "lastModified": "2026-10-10T19:16:57.927",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
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                "confidentialityImpact": "NONE",
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          "cvssMetricV40": [
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                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
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                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 6.0,
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                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
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                "userInteraction": "PASSIVE",
                "valueDensity": "NOT_DEFINED",
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            }
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        "references": [
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            "source": "disclosure@vulncheck.com",
            "url": "https://github.com/pulseaiclub/phi"
          },
          {
            "source": "disclosure@vulncheck.com",
            "url": "https://github.com/pulseaiclub/phi/blob/5b3cb440a7c58115ef64283a737a43299f2805a4/internal/agent/engine_runner.go#L52-L60"
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      }
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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