cve-2026-77647

{
  "cvss": 9.8,
  "datePublished": "2026-08-20T23:16:28.647",
  "dateUpdated": "2026-10-26T10:10:00.140",
  "description": "SPIP before 4.4.20 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to incorrect identification of <?php blocks, and var_export's mishandling of certain cases such as presence of a '<' character.",
  "id": "CVE-2026-77647",
  "raw": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "SPIP",
            "vendor": "SPIP",
            "versions": [
              {
                "lessThan": "4.4.20",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "cve@mitre.org"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "SPIP before 4.4.20 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to incorrect identification of <?php blocks, and var_export's mishandling of certain cases such as presence of a '<' character."
      },
      {
        "lang": "es",
        "value": "SPIP antes de 4.4.20 permite a atacantes remotos no autenticados ejecutar código arbitrario, como fue explotado en la naturaleza en agosto de 2026. Esto está relacionado con la identificación incorrecta de bloques  [código_PHP_PoC] , y el manejo incorrecto de var_export de ciertos casos como la presencia de un carácter ’<’."
      }
    ],
    "id": "CVE-2026-77647",
    "lastModified": "2026-10-26T10:10:00.140",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9,
          "source": "cve@mitre.org",
          "type": "Secondary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-77647",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "yes"
              },
              {
                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-08-21T19:49:42.530562Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-08-20T23:16:28.647",
    "references": [
      {
        "source": "cve@mitre.org",
        "url": "https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-20.html"
      },
      {
        "source": "cve@mitre.org",
        "url": "https://lists.debian.org/debian-security-announce/2026/msg00359.html"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Deferred",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-94"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  },
  "severity": "CRITICAL",
  "source": "nvd",
  "title": "SPIP before 4.4.20 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in Aug..."
}