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CVE-2026-73294

Estado: AplazadaCrítica (9.9)—

Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.17 and 2.19.5-beta2, repository git_url handling passes an attacker-controlled --upload-pack option to CmdGitClient.GetLastRemoteCommitHash through POST /api/project/{id}/repositories and scheduled commit-hash polling, allowing a project Manager or Owner to execute arbitrary OS commands in the Semaphore server process. This issue is fixed in versions 2.18.17 and 2.19.5-beta2.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Acceso remoto con privilegios (PR:L) a servicio web expuesto; inyección de comandos OS vía parámetro git_url en API REST. CWE-78 (command injection) permite T1059; ejecución en contexto de proceso del servidor eleva a T1068.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramPrivileged Account ManagementExecution PreventionDisable or Remove Feature or ProgramApplication Isolation and SandboxingExploit Protection

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Semaphore — Semaphore UIAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-73294",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-73294",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-12T16:03:17.361594Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 9.9,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 3.1
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "semaphoreui",
          "product": "semaphore",
          "versions": [
            {
              "status": "affected",
              "version": "< 2.18.17"
            },
            {
              "status": "affected",
              "version": ">= 2.19.0-alpha3, < 2.19.5-beta2"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-08-12T16:17:22.640",
  "references": [
    {
      "url": "https://github.com/semaphoreui/semaphore/commit/7e8a9434bd81b82cf42220151c74801ea97542d6",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/semaphoreui/semaphore/commit/a7a7a33a64aea382a0726b3722856f298663eacf",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/semaphoreui/semaphore/tree/v2.18.17",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/semaphoreui/semaphore/tree/v2.19.5-beta2",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/semaphoreui/semaphore/security/advisories/GHSA-xp7j-h7jc-4w8p",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        },
        {
          "lang": "en",
          "value": "CWE-88"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.17 and 2.19.5-beta2, repository git_url handling passes an attacker-controlled --upload-pack option to CmdGitClient.GetLastRemoteCommitHash through POST /api/project/{id}/repositories and scheduled commit-hash polling, allowing a project Manager or Owner to execute arbitrary OS commands in the Semaphore server process. This issue is fixed in versions 2.18.17 and 2.19.5-beta2."
    }
  ],
  "lastModified": "2026-09-09T21:02:22.660",
  "sourceIdentifier": "security-advisories@github.com"
}