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CVE-2026-18856

Estado: AplazadaBaja (2)—

A vulnerability was determined in Poesis Rhymix CMS up to 2.1.33. This impacts the function procImporterAdminCheckXmlFile of the file modules/importer/importer.admin.controller.php of the component Data Import Module. This manipulation of the argument filename causes server-side request forgery. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version 2.1.34 will fix this issue. It is recommended to upgrade the affected component.

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).

Tecnologías afectadas (1)

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

Poesis — Rhymix CMSAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-18856",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-18856",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-05T16:19:26.715375Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Secondary",
        "source": "cna@vuldb.com",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:M/C:P/I:P/A:P",
          "authentication": "MULTIPLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cna@vuldb.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.7,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.4,
        "exploitabilityScore": 1.2
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "cna@vuldb.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 2,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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:X",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "HIGH",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "LOW",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "cna@vuldb.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:poesis:rhymix_cms:*:*:*:*:*:*:*:*"
          ],
          "vendor": "Poesis",
          "modules": [
            "Data Import Module"
          ],
          "product": "Rhymix CMS",
          "versions": [
            {
              "status": "affected",
              "version": "2.1.0"
            },
            {
              "status": "affected",
              "version": "2.1.1"
            },
            {
              "status": "affected",
              "version": "2.1.2"
            },
            {
              "status": "affected",
              "version": "2.1.3"
            },
            {
              "status": "affected",
              "version": "2.1.4"
            },
            {
              "status": "affected",
              "version": "2.1.5"
            },
            {
              "status": "affected",
              "version": "2.1.6"
            },
            {
              "status": "affected",
              "version": "2.1.7"
            },
            {
              "status": "affected",
              "version": "2.1.8"
            },
            {
              "status": "affected",
              "version": "2.1.9"
            },
            {
              "status": "affected",
              "version": "2.1.10"
            },
            {
              "status": "affected",
              "version": "2.1.11"
            },
            {
              "status": "affected",
              "version": "2.1.12"
            },
            {
              "status": "affected",
              "version": "2.1.13"
            },
            {
              "status": "affected",
              "version": "2.1.14"
            },
            {
              "status": "affected",
              "version": "2.1.15"
            },
            {
              "status": "affected",
              "version": "2.1.16"
            },
            {
              "status": "affected",
              "version": "2.1.17"
            },
            {
              "status": "affected",
              "version": "2.1.18"
            },
            {
              "status": "affected",
              "version": "2.1.19"
            },
            {
              "status": "affected",
              "version": "2.1.20"
            },
            {
              "status": "affected",
              "version": "2.1.21"
            },
            {
              "status": "affected",
              "version": "2.1.22"
            },
            {
              "status": "affected",
              "version": "2.1.23"
            },
            {
              "status": "affected",
              "version": "2.1.24"
            },
            {
              "status": "affected",
              "version": "2.1.25"
            },
            {
              "status": "affected",
              "version": "2.1.26"
            },
            {
              "status": "affected",
              "version": "2.1.27"
            },
            {
              "status": "affected",
              "version": "2.1.28"
            },
            {
              "status": "affected",
              "version": "2.1.29"
            },
            {
              "status": "affected",
              "version": "2.1.30"
            },
            {
              "status": "affected",
              "version": "2.1.31"
            },
            {
              "status": "affected",
              "version": "2.1.32"
            },
            {
              "status": "affected",
              "version": "2.1.33"
            },
            {
              "status": "unaffected",
              "version": "2.1.34"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-08-05T01:16:44.757",
  "references": [
    {
      "url": "https://github.com/MCzhao2006/Rhymix-SSRF-Report",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://rhymix.org/files/attach/releases/rhymix-2.1.34.zip",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://rhymix.org/news/1948042",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/cve/CVE-2026-18856",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/submit/858471",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/vuln/385868",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/vuln/385868/cti",
      "source": "cna@vuldb.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cna@vuldb.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was determined in Poesis Rhymix CMS up to 2.1.33. This impacts the function procImporterAdminCheckXmlFile of the file modules/importer/importer.admin.controller.php of the component Data Import Module. This manipulation of the argument filename causes server-side request forgery. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version 2.1.34 will fix this issue. It is recommended to upgrade the affected component."
    }
  ],
  "lastModified": "2026-08-12T20:59:00.027",
  "sourceIdentifier": "cna@vuldb.com"
}