fkie_cve-2025-8571
Vulnerability from fkie_nvd
Published
2025-08-05 23:15
Modified
2025-09-04 15:54
Severity ?
4.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Summary
Concrete CMS 9 to 9.4.2 and versions below 8.5.21 are vulnerable to Reflected Cross-Site Scripting (XSS) in the Conversation Messages Dashboard Page. Unsanitized input could cause theft of session cookies or tokens, defacement of web content, redirection to malicious sites, and (if victim is an admin), the execution of unauthorized actions. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 4.8 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Fortbridge https://fortbridge.co.uk/  for performing a penetration test and vulnerability assessment on Concrete CMS and reporting this issue.
References
ff5b8ace-8b95-4078-9743-eac1ca5451dehttps://documentation.concretecms.org/9-x/developers/introduction/version-history/943-release-notesRelease Notes
ff5b8ace-8b95-4078-9743-eac1ca5451dehttps://documentation.concretecms.org/developers/introduction/version-history/8521-release-notesRelease Notes
ff5b8ace-8b95-4078-9743-eac1ca5451dehttps://www.concretecms.org/downloadProduct
Impacted products
Vendor Product Version
concretecms concrete_cms *
concretecms concrete_cms *


To clipboard 

{
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    {
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              "matchCriteriaId": "414E2949-3A12-45EB-8B1B-5BA3CF318CAB",
              "versionEndExcluding": "8.5.21",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Concrete CMS 9 to 9.4.2 and versions below 8.5.21 are vulnerable to Reflected Cross-Site Scripting (XSS) in the Conversation Messages Dashboard Page.\u00a0Unsanitized input could cause theft of session cookies or tokens, defacement of web content, redirection to malicious sites, and (if victim is an admin), the execution of unauthorized actions.\u00a0The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 4.8 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N.\u00a0Thanks  Fortbridge https://fortbridge.co.uk/ \u00a0for performing a penetration test and vulnerability assessment on Concrete CMS and reporting this issue."
    },
    {
      "lang": "es",
      "value": "Concrete CMS 9 a 9.4.2 y versiones anteriores a la 8.5.21 son vulnerables a ataques de Cross-Site Scripting (XSS) reflejado en la p\u00e1gina del panel de mensajes de conversaci\u00f3n. La entrada no depurada podr\u00eda provocar el robo de cookies o tokens de sesi\u00f3n, la desfiguraci\u00f3n del contenido web, la redirecci\u00f3n a sitios maliciosos y (si la v\u00edctima es administrador), la ejecuci\u00f3n de acciones no autorizadas. El equipo de seguridad de Concrete CMS otorg\u00f3 a esta vulnerabilidad una puntuaci\u00f3n de 4.8 en CVSS v.4.0 con el vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N. Gracias a Fortbridge (https://fortbridge.co.uk/) por realizar una prueba de penetraci\u00f3n y una evaluaci\u00f3n de vulnerabilidades en Concrete CMS e informar de este problema."
    }
  ],
  "id": "CVE-2025-8571",
  "lastModified": "2025-09-04T15:54:06.360",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.7,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
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    "cvssMetricV40": [
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        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 4.8,
          "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": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/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": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "ff5b8ace-8b95-4078-9743-eac1ca5451de",
        "type": "Secondary"
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  },
  "published": "2025-08-05T23:15:38.493",
  "references": [
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      "source": "ff5b8ace-8b95-4078-9743-eac1ca5451de",
      "tags": [
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      ],
      "url": "https://documentation.concretecms.org/9-x/developers/introduction/version-history/943-release-notes"
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      "tags": [
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    {
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      "tags": [
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      "url": "https://www.concretecms.org/download"
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  "sourceIdentifier": "ff5b8ace-8b95-4078-9743-eac1ca5451de",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "value": "CWE-20"
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      "type": "Secondary"
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          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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