FKIE_CVE-2026-41180

Vulnerability from fkie_nvd - Published: 2026-04-23 02:16 - Updated: 2026-10-25 23:10
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
PsiTransfer is an open source, self-hosted file sharing solution. Prior to version 2.4.3, the upload PATCH flow under `/files/:uploadId` validates the mounted request path using the still-encoded `req.path`, but the downstream tus handler later writes using the decoded `req.params.uploadId`. In deployments that use a supported custom `PSITRANSFER_UPLOAD_DIR` whose basename prefixes a startup-loaded JavaScript path, such as `conf`, an unauthenticated attacker can create `config.<NODE_ENV>.js` in the application root. The attacker-controlled file is then executed on the next process restart. Version 2.4.3 contains a patch.
References
security-advisories@github.comhttps://github.com/psi-4ward/psitransfer/commit/8b547bf3e09757122efa00aab90281e3915aa0c6
security-advisories@github.comhttps://github.com/psi-4ward/psitransfer/releases/tag/v2.4.3
security-advisories@github.comhttps://github.com/psi-4ward/psitransfer/security/advisories/GHSA-533q-w4g6-5586
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/psi-4ward/psitransfer/security/advisories/GHSA-533q-w4g6-5586
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "psitransfer",
          "vendor": "psi-4ward",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.4.3"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "PsiTransfer is an open source, self-hosted file sharing solution. Prior to version 2.4.3, the upload PATCH flow under `/files/:uploadId` validates the mounted request path using the still-encoded `req.path`, but the downstream tus handler later writes using the decoded `req.params.uploadId`. In deployments that use a supported custom `PSITRANSFER_UPLOAD_DIR` whose basename prefixes a startup-loaded JavaScript path, such as `conf`, an unauthenticated attacker can create `config.\u003cNODE_ENV\u003e.js` in the application root. The attacker-controlled file is then executed on the next process restart. Version 2.4.3 contains a patch."
    },
    {
      "lang": "es",
      "value": "PsiTransfer es una soluci\u00f3n de c\u00f3digo abierto y autoalojada para compartir archivos. Antes de la versi\u00f3n 2.4.3, el flujo PATCH de subida bajo \u201c/files/:uploadId\u201d valida la ruta de solicitud montada usando \u201creq.path\u201d (a\u00fan codificado), pero el gestor tus descendente escribe m\u00e1s tarde usando \u201creq.params.uploadId\u201d (decodificado). En despliegues que usan un \u201cPSITRANSFER_UPLOAD_DIR\u201d personalizado soportado cuyo nombre base prefija una ruta JavaScript cargada al inicio, como \u201cconf\u201d, un atacante no autenticado puede crear \u201cconfig.[NODE_ENV].js\u201d en la ra\u00edz de la aplicaci\u00f3n. El archivo controlado por el atacante se ejecuta entonces en el siguiente reinicio del proceso. La versi\u00f3n 2.4.3 contiene un parche."
    }
  ],
  "id": "CVE-2026-41180",
  "lastModified": "2026-10-25T23:10:00.167",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-41180",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-23T13:58:52.952704Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-23T02:16:15.977",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/psi-4ward/psitransfer/commit/8b547bf3e09757122efa00aab90281e3915aa0c6"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/psi-4ward/psitransfer/releases/tag/v2.4.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/psi-4ward/psitransfer/security/advisories/GHSA-533q-w4g6-5586"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/psi-4ward/psitransfer/security/advisories/GHSA-533q-w4g6-5586"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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