FKIE_CVE-2026-33623

Vulnerability from fkie_nvd - Published: 2026-03-26 21:17 - Updated: 2026-06-17 10:37
Severity
6.7 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab `v0.8.4` contains a Windows-only command injection issue in the orphaned Chrome cleanup path. When an instance is stopped, the Windows cleanup routine builds a PowerShell `-Command` string using a `needle` derived from the profile path. In `v0.8.4`, that string interpolation escapes backslashes but does not safely neutralize other PowerShell metacharacters. If an attacker can launch an instance using a crafted profile name and then trigger the cleanup path, they may be able to execute arbitrary PowerShell commands on the Windows host in the security context of the PinchTab process user. This is not an unauthenticated internet RCE. It requires authenticated, administrative-equivalent API access to instance lifecycle endpoints, and the resulting command execution inherits the permissions of the PinchTab OS user rather than bypassing host privilege boundaries. Version 0.8.5 contains a patch for the issue.
References
security-advisories@github.comhttps://github.com/pinchtab/pinchtab/commit/25b3374bdcdf0dad32c44d5d726bf953238cd8bdPatch
security-advisories@github.comhttps://github.com/pinchtab/pinchtab/security/advisories/GHSA-p8mm-644p-phmhExploit, Mitigation, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/pinchtab/pinchtab/security/advisories/GHSA-p8mm-644p-phmhExploit, Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
pinchtab pinchtab *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "pinchtab",
          "vendor": "pinchtab",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.8.5"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:pinchtab:pinchtab:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9E159A6D-501A-450C-98AC-61DF18CF18F7",
              "versionEndExcluding": "0.8.5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "PinchTab is a standalone HTTP server that gives AI agents direct control over a Chrome browser. PinchTab `v0.8.4` contains a Windows-only command injection issue in the orphaned Chrome cleanup path. When an instance is stopped, the Windows cleanup routine builds a PowerShell `-Command` string using a `needle` derived from the profile path. In `v0.8.4`, that string interpolation escapes backslashes but does not safely neutralize other PowerShell metacharacters. If an attacker can launch an instance using a crafted profile name and then trigger the cleanup path, they may be able to execute arbitrary PowerShell commands on the Windows host in the security context of the PinchTab process user. This is not an unauthenticated internet RCE. It requires authenticated, administrative-equivalent API access to instance lifecycle endpoints, and the resulting command execution inherits the permissions of the PinchTab OS user rather than bypassing host privilege boundaries. Version 0.8.5 contains a patch for the issue."
    },
    {
      "lang": "es",
      "value": "PinchTab es un servidor HTTP aut\u00f3nomo que otorga a los agentes de IA control directo sobre un navegador Chrome. PinchTab \u0027v0.8.4\u0027 contiene un problema de inyecci\u00f3n de comandos solo para Windows en la ruta de limpieza de Chrome hu\u00e9rfano. Cuando una instancia se detiene, la rutina de limpieza de Windows construye una cadena de PowerShell \u0027-Command\u0027 usando una \u0027needle\u0027 derivada de la ruta del perfil. En \u0027v0.8.4\u0027, esa interpolaci\u00f3n de cadena escapa las barras invertidas pero no neutraliza de forma segura otros metacaracteres de PowerShell. Si un atacante puede lanzar una instancia usando un nombre de perfil manipulado y luego activar la ruta de limpieza, podr\u00edan ejecutar comandos arbitrarios de PowerShell en el host de Windows en el contexto de seguridad del usuario del proceso de PinchTab. Esto no es una RCE de internet no autenticada. Requiere acceso a la API autenticado y equivalente a administrador a los puntos finales del ciclo de vida de la instancia, y la ejecuci\u00f3n de comandos resultante hereda los permisos del usuario del SO de PinchTab en lugar de eludir los l\u00edmites de privilegios del host. La versi\u00f3n 0.8.5 contiene un parche para el problema."
    }
  ],
  "id": "CVE-2026-33623",
  "lastModified": "2026-06-17T10:37:48.250",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.5,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-33623",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-03-27T19:51:23.671094Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-03-26T21:17:06.950",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/pinchtab/pinchtab/commit/25b3374bdcdf0dad32c44d5d726bf953238cd8bd"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/pinchtab/pinchtab/security/advisories/GHSA-p8mm-644p-phmh"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/pinchtab/pinchtab/security/advisories/GHSA-p8mm-644p-phmh"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        },
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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