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CVE-2026-0685

Estado: Pendiente de análisisCrítica (9.8)—

Server side template inject (SSTI) in the expression evaluation component in Genshi Template Engine version 0.7.9 allows a remote attacker to achieve remote code execution (RCE) via crafted template expressions.

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.

SSTI en aplicación web expuesta (AV:N, PR:N, UI:N) permite RCE remoto. El atacante inyecta expresiones maliciosas en plantillas para ejecutar código arbitrario y acceder a datos del servidor.

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

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (1)

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

Genshi — Template EngineAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-0685",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-0685",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-26T17:36:09.734967Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cret@cert.org",
      "affectedData": [
        {
          "vendor": "Edgewall *Genshi*",
          "product": "Genshi",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "custom",
              "lessThanOrEqual": "0.7.9"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-06-26T16:16:29.757",
  "references": [
    {
      "url": "https://github.com/edgewall/genshi/",
      "source": "cret@cert.org"
    },
    {
      "url": "https://www.kb.cert.org/vuls/id/244846",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "descriptions": [
    {
      "lang": "en",
      "value": "Server side template inject (SSTI) in the expression evaluation component in Genshi Template Engine version 0.7.9 allows a remote attacker to achieve remote code execution (RCE) via crafted template expressions."
    }
  ],
  "lastModified": "2026-06-26T20:05:14.220",
  "sourceIdentifier": "cret@cert.org"
}