{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Element Server Suite Community Edition (ESS Community) deploys a Matrix stack using the provided Helm charts and Kubernetes distribution. The ESS Community Helm Chart secrets initialization hook (using matrix-tools container before 0.5.7) is using an insecure Matrix server key generation method, allowing network attackers to potentially recreate the same key pair, allowing them to impersonate the victim server. The secret is generated by the secrets initialization hook, in the ESS Community Helm Chart values, if both initSecrets.enabled is not set to false and synapse.signingKey is not defined. Given a server key in Matrix authenticates both requests originating from and events constructed on a given server, this potentially impacts confidentiality, integrity and availability of rooms which have a vulnerable server present as a member. The confidentiality of past conversations in end-to-end encrypted rooms is not impacted. The key generation issue was fixed in matrix-tools 0.5.7, released as part of ESS Community Helm Chart 25.12.1."
    },
    {
      "lang": "es",
      "value": "Element Server Suite Community Edition (ESS Community) despliega una pila de Matrix utilizando los gr\u00e1ficos Helm proporcionados y la distribuci\u00f3n de Kubernetes. El hook de inicializaci\u00f3n de secretos del gr\u00e1fico Helm de ESS Community (utilizando el contenedor matrix-tools anterior a la versi\u00f3n 0.5.7) est\u00e1 utilizando un m\u00e9todo inseguro de generaci\u00f3n de claves de servidor de Matrix, permitiendo a los atacantes de red recrear potencialmente el mismo par de claves, lo que les permite suplantar al servidor v\u00edctima. El secreto es generado por el hook de inicializaci\u00f3n de secretos, en los valores del gr\u00e1fico Helm de ESS Community, si tanto initSecrets.enabled no est\u00e1 configurado como falso y synapse.signingKey no est\u00e1 definido. Dado que una clave de servidor en Matrix autentica tanto las solicitudes originadas desde como los eventos construidos en un servidor dado, esto impacta potencialmente la confidencialidad, integridad y disponibilidad de las salas que tienen un servidor vulnerable presente como miembro. La confidencialidad de las conversaciones pasadas en salas cifradas de extremo a extremo no se ve afectada. El problema de generaci\u00f3n de claves fue solucionado en matrix-tools 0.5.7, lanzado como parte del gr\u00e1fico Helm de ESS Community 25.12.1."
    }
  ],
  "id": "CVE-2026-24044",
  "lastModified": "2026-02-13T14:23:48.007",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.2,
          "baseSeverity": "CRITICAL",
          "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": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-12T20:16:09.237",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/element-hq/ess-helm/blob/main/docs/maintenance.md#fixing-cve-2026-24044elementsec-2025-1670-manually"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/element-hq/ess-helm/releases/tag/25.12.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/element-hq/ess-helm/security/advisories/GHSA-qwcj-h6m8-vp6q"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-336"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}