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CVE-2026-27397

Status: DeferredMedium (6.5)—

Authorization Bypass Through User-Controlled Key vulnerability in Really Simple Plugins B.V. Really Simple Security Pro allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Really Simple Security Pro: from n/a through 9.5.4.0.

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)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Really-simple-plugins — Really Simple Security PROAI

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-27397",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-27397",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-19T13:45:41.733251Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "audit@patchstack.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "audit@patchstack.com",
      "affectedData": [
        {
          "vendor": "Really Simple Plugins B.V.",
          "product": "Really Simple Security Pro",
          "versions": [
            {
              "status": "affected",
              "changes": [
                {
                  "at": "9.5.4.1",
                  "status": "unaffected"
                }
              ],
              "version": "n/a",
              "versionType": "custom",
              "lessThanOrEqual": "9.5.4.0"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-03-19T06:16:25.410",
  "references": [
    {
      "url": "https://patchstack.com/database/wordpress/plugin/really-simple-ssl-pro/vulnerability/wordpress-really-simple-security-pro-plugin-9-5-3-1-insecure-direct-object-references-idor-vulnerability?_s_id=cve",
      "source": "audit@patchstack.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "audit@patchstack.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Authorization Bypass Through User-Controlled Key vulnerability in Really Simple Plugins B.V. Really Simple Security Pro allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Really Simple Security Pro: from n/a through 9.5.4.0."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de elusión de autorización a través de clave controlada por el usuario en Really Simple Plugins B.V. Really Simple Security Pro permite explotar niveles de seguridad de control de acceso configurados incorrectamente. Este problema afecta a Really Simple Security Pro: desde n/a hasta 9.5.4.0."
    }
  ],
  "lastModified": "2026-06-17T10:27:07.770",
  "sourceIdentifier": "audit@patchstack.com"
}