FKIE_CVE-2026-2736

Vulnerability from fkie_nvd - Published: 2026-02-19 09:16 - Updated: 2026-06-17 10:31
Severity
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
Reflected Cross-site Scripting (XSS) in Alkacon's OpenCms v18.0, which allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL containing the ‘q’ parameter in ‘/search/index.html’. This vulnerability can be exploited to steal sensitive user information such as session cookies, or to perform actions while impersonating the user.
References
cve-coordination@incibe.eshttps://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-alkacons-opencmsThird Party Advisory
Impacted products
Vendor Product Version
alkacon opencms 18.0.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "OpenCms",
          "vendor": "Alkacon",
          "versions": [
            {
              "status": "affected",
              "version": "18.0"
            }
          ]
        }
      ],
      "source": "cve-coordination@incibe.es"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:alkacon:opencms:18.0.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "B7C2457A-A34E-49C8-94D8-66D2ECB9D1E7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Reflected Cross-site Scripting (XSS) in Alkacon\u0027s OpenCms v18.0, which allows an attacker to execute JavaScript code in the victim\u0027s browser by sending the victim a malicious URL containing the \u2018q\u2019 parameter in \u2018/search/index.html\u2019. This vulnerability can be exploited to steal sensitive user information such as session cookies, or to perform actions while impersonating the user."
    },
    {
      "lang": "es",
      "value": "Cross-site scripting (XSS) reflejado en OpenCms v18.0 de Alkacon, que permite a un atacante ejecutar c\u00f3digo JavaScript en el navegador de la v\u00edctima enviando a la v\u00edctima una URL maliciosa que contiene el par\u00e1metro \u0027q\u0027 en \u0027/search/index.html\u0027. Esta vulnerabilidad puede ser explotada para robar informaci\u00f3n sensible del usuario como cookies de sesi\u00f3n, o para realizar acciones suplantando al usuario."
    }
  ],
  "id": "CVE-2026-2736",
  "lastModified": "2026-06-17T10:31:37.660",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.1,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "ACTIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cve-coordination@incibe.es",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-2736",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-20T16:06:01.863811Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-19T09:16:28.657",
  "references": [
    {
      "source": "cve-coordination@incibe.es",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-alkacons-opencms"
    }
  ],
  "sourceIdentifier": "cve-coordination@incibe.es",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "cve-coordination@incibe.es",
      "type": "Secondary"
    }
  ]
}



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Sightings

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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