Vulnerability-Lookup

CVE-2026-13745 (GCVE-0-2026-13745)

Vulnerability from cvelistv5 – Published: 2026-09-10 08:33 – Updated: 2026-09-10 08:33

Title

Arbitrary Code Execution in Gemini CLI via Symlinked Environment Variables

Summary

A vulnerability in the Gemini CLI and associated GitHub Action allowed an unprivileged attacker to achieve an arbitrary code execution in Gemini CLI via untrusted local .env files overriding GEMINI_CLI_HOME.

Severity

9.2 (Critical)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Amber

CWE

CWE-20 - Improper input validation
CWE-78 - Improper neutralization of special elements used in an OS command ('OS command injection')

Assigner

GoogleCloud Google root

References

2 references

URL	Tags
https://github.com/google-github-actions/run-gemi…
https://github.com/google-github-actions/run-gemi…

Impacted products

2 products

Vendor	Product	Version	CPE status
Google Cloud	Gemini CLI	Affected: 0 , < 0.39.1 (custom)	guessed
Google Cloud	run-gemini-cli GitHub Action	Affected: 0 , < 0.1.22 (custom)	guessed

Credits

Benjamin Faller, Redguard AG

Show details on NVD website

JSON

To clipboard

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          "product": "Gemini CLI",
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      "credits": [
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          "type": "reporter",
          "value": "Benjamin Faller, Redguard AG"
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      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
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            "subConfidentialityImpact": "LOW",
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        {
          "descriptions": [
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              "cweId": "CWE-78",
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      "providerMetadata": {
        "dateUpdated": "2026-09-10T08:33:09.309Z",
        "orgId": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
        "shortName": "GoogleCloud"
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      "references": [
        {
          "url": "https://github.com/google-github-actions/run-gemini-cli/releases/tag/v0.1.22"
        },
        {
          "url": "https://github.com/google-github-actions/run-gemini-cli/security/advisories/GHSA-wpqr-6v78-jr5g"
        }
      ],
      "solutions": [
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          "lang": "en",
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              "value": "\u003cdiv\u003e\u003col\u003e\u003cli\u003e\u003cstrong\u003eUpgrade\u003c/strong\u003e: Ensure you are using the latest version of gemini cli and follow the best practices guide https://github.com/google-github-actions/run-gemini-cli/blob/main/docs/trust-guidance.md\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eConfigure Trust\u003c/strong\u003e: Determine if your CI workflow operates on trusted or untrusted data. If the data is fully trusted, set\u0026nbsp;\u003ccode\u003eGEMINI_TRUST_WORKSPACE: \u0027true\u0027\u003c/code\u003e\u0026nbsp;in your workflow.\u003c/li\u003e\u003c/ol\u003e\u003c/div\u003e"
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        }
      ],
      "source": {
        "discovery": "EXTERNAL"
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      "title": "Arbitrary Code Execution in Gemini CLI via Symlinked Environment Variables",
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    "assignerOrgId": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
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    "datePublished": "2026-09-10T08:33:09.309Z",
    "dateReserved": "2026-06-29T15:39:28.269Z",
    "dateUpdated": "2026-09-10T08:33:09.309Z",
    "state": "PUBLISHED"
  },
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  }
}

FKIE_CVE-2026-13745

Vulnerability from fkie_nvd - Published: 2026-09-10 09:17 - Updated: 2026-09-10 09:17

Severity

9.2 (Critical) - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Amber

Summary

References

	URL	Tags
	f45cbf4e-4146-4068-b7e1-655ffc2c548c	https://github.com/google-github-actions/run-gemini-cli/releases/tag/v0.1.22
	f45cbf4e-4146-4068-b7e1-655ffc2c548c	https://github.com/google-github-actions/run-gemini-cli/security/advisories/GHSA-wpqr-6v78-jr5g

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Gemini CLI",
          "vendor": "Google Cloud",
          "versions": [
            {
              "lessThan": "0.39.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "run-gemini-cli GitHub Action",
          "vendor": "Google Cloud",
          "versions": [
            {
              "lessThan": "0.1.22",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "f45cbf4e-4146-4068-b7e1-655ffc2c548c"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the Gemini CLI and associated GitHub Action allowed an unprivileged attacker\u00a0to achieve an arbitrary code execution in Gemini CLI via untrusted local .env files overriding GEMINI_CLI_HOME."
    }
  ],
  "id": "CVE-2026-13745",
  "lastModified": "2026-09-10T09:17:00.703",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.2,
          "baseSeverity": "CRITICAL",
          "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": "AMBER",
          "subAvailabilityImpact": "LOW",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
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        "type": "Secondary"
      }
    ]
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  "published": "2026-09-10T09:17:00.703",
  "references": [
    {
      "source": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
      "url": "https://github.com/google-github-actions/run-gemini-cli/releases/tag/v0.1.22"
    },
    {
      "source": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
      "url": "https://github.com/google-github-actions/run-gemini-cli/security/advisories/GHSA-wpqr-6v78-jr5g"
    }
  ],
  "sourceIdentifier": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ],
      "source": "f45cbf4e-4146-4068-b7e1-655ffc2c548c",
      "type": "Secondary"
    }
  ]
}

GHSA-2255-3477-VP73

Vulnerability from github – Published: 2026-09-10 09:31 – Updated: 2026-09-10 09:31

Details

Severity

9.2 (Critical)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Amber

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-13745"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-10T09:17:00Z",
    "severity": "CRITICAL"
  },
  "details": "A vulnerability in the Gemini CLI and associated GitHub Action allowed an unprivileged attacker\u00a0to achieve an arbitrary code execution in Gemini CLI via untrusted local .env files overriding GEMINI_CLI_HOME.",
  "id": "GHSA-2255-3477-vp73",
  "modified": "2026-09-10T09:31:33Z",
  "published": "2026-09-10T09:31:33Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/google-github-actions/run-gemini-cli/security/advisories/GHSA-wpqr-6v78-jr5g"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13745"
    },
    {
      "type": "WEB",
      "url": "https://github.com/google-github-actions/run-gemini-cli/releases/tag/v0.1.22"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-13745 (GCVE-0-2026-13745)

FKIE_CVE-2026-13745

GHSA-2255-3477-VP73

Tags

Sightings

Nomenclature