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CVE-2026-94456

Estado: Pendiente de análisisCrítica (9.1)—

Postiz generates security-sensitive credentials using `Math.random()` instead of a cryptographically secure source. The same helper is used for OAuth access tokens, authorization codes, client secrets, organization API keys, and PKCE verifiers, meaning these credentials depend entirely on V8’s deterministic xorshift128+ PRNG state.

An unauthenticated OAuth dynamic client registration endpoint exposes freshly generated client credentials, giving attackers enough consecutive PRNG output to reconstruct that internal state. Once recovered, they can deterministically derive past and future values produced by the same generator, potentially compromising credentials belonging to other users and organizations.

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.

Explotación remota sin autenticación de endpoint expuesto (OAuth DCR) que filtra credenciales débiles generadas con PRNG predecible, permitiendo recuperar secretos de otros usuarios.

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 ManagementUser Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and SandboxingExploit Protection

Tecnologías afectadas (1)

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

Gitroom — PostizAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-94456",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-94456",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-22T18:10:57.774548Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "4cdc9741-f887-419a-a2fd-acbbd2729276",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.1,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "4cdc9741-f887-419a-a2fd-acbbd2729276",
      "affectedData": [
        {
          "repo": "https://github.com/gitroomhq/postiz-app",
          "vendor": "GitroomHQ",
          "product": "postiz-app",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2.4.0",
              "versionType": "semver"
            }
          ],
          "packageName": "postiz-app",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-09-22T17:17:31.670",
  "references": [
    {
      "url": "https://gadvisory.org/advisories/PSA-2026-TD98KY",
      "source": "4cdc9741-f887-419a-a2fd-acbbd2729276"
    },
    {
      "url": "https://github.com/gitroomhq/postiz-app",
      "source": "4cdc9741-f887-419a-a2fd-acbbd2729276"
    },
    {
      "url": "https://github.com/gitroomhq/postiz-app/commit/9259cf2429e8cc0c88414e88d5e6c783d7ffba63",
      "source": "4cdc9741-f887-419a-a2fd-acbbd2729276"
    },
    {
      "url": "https://github.com/gitroomhq/postiz-app/releases/tag/v2.24.0",
      "source": "4cdc9741-f887-419a-a2fd-acbbd2729276"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "4cdc9741-f887-419a-a2fd-acbbd2729276",
      "description": [
        {
          "lang": "en",
          "value": "CWE-330"
        },
        {
          "lang": "en",
          "value": "CWE-338"
        },
        {
          "lang": "en",
          "value": "CWE-341"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Postiz generates security-sensitive credentials using `Math.random()` instead of a cryptographically secure source. The same helper is used for OAuth access tokens, authorization codes, client secrets, organization API keys, and PKCE verifiers, meaning these credentials depend entirely on V8’s deterministic xorshift128+ PRNG state.\n\nAn unauthenticated OAuth dynamic client registration endpoint exposes freshly generated client credentials, giving attackers enough consecutive PRNG output to reconstruct that internal state. Once recovered, they can deterministically derive past and future values produced by the same generator, potentially compromising credentials belonging to other users and organizations."
    }
  ],
  "lastModified": "2026-09-22T19:37:36.747",
  "sourceIdentifier": "4cdc9741-f887-419a-a2fd-acbbd2729276"
}