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CVE-2023-0581

Status: ModifiedMedium (5.3)—

The PrivateContent plugin for WordPress is vulnerable to protection mechanism bypass due to the use of client side validation in versions up to, and including, 8.4.3. This is due to the plugin checking if an IP had been blocklist via client-side scripts rather than server-side. This makes it possible for unauthenticated attackers to bypass any login restrictions that may prevent a brute force attack.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Lcweb — Privatecontent

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2023-0581",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-0581",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-01-13T16:18:05.873099Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@wordfence.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
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          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
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      {
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
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  "published": "2023-01-30T15:15:09.823",
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      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/de73304e-7a28-4304-b1ed-2f6dd7738236?source=cve",
      "source": "security@wordfence.com"
    },
    {
      "url": "https://lcweb.it/privatecontent/changelog",
      "tags": [
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        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/de73304e-7a28-4304-b1ed-2f6dd7738236",
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@wordfence.com",
      "description": [
        {
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          "value": "CWE-602"
        }
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    },
    {
      "type": "Secondary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The PrivateContent plugin for WordPress is vulnerable to protection mechanism bypass due to the use of client side validation in versions up to, and including, 8.4.3. This is due to the plugin checking if an IP had been blocklist via client-side scripts rather than server-side. This makes it possible for unauthenticated attackers to bypass any login restrictions  that may prevent a brute force attack."
    },
    {
      "lang": "es",
      "value": "El complemento PrivateContent para WordPress es vulnerable a la omisión del mecanismo de protección debido al uso de la validación del lado del cliente en versiones hasta la 8.4.3 incluida. Esto se debe a que el complemento verifica si una IP había sido incluida en la lista de bloqueo mediante scripts del lado del cliente en lugar de hacerlo desde el lado del servidor. Esto hace posible que atacantes no autenticados eludan cualquier restricción de inicio de sesión que pueda evitar un ataque de fuerza bruta."
    }
  ],
  "lastModified": "2026-06-17T05:25:51.940",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:lcweb:privatecontent:*:*:*:*:*:wordpress:*:*",
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              "versionEndExcluding": "8.4.4"
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          "operator": "OR"
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  "sourceIdentifier": "security@wordfence.com"
}