FKIE_CVE-2026-77647

Vulnerability from fkie_nvd - Published: 2026-08-20 23:16 - Updated: 2026-08-20 23:16
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
cve@mitre.orghttps://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-20.html
cve@mitre.orghttps://lists.debian.org/debian-security-announce/2026/msg00359.html
Impacted products
Vendor Product Version
To clipboard 

{
  "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 \u003c?php blocks, and var_export\u0027s mishandling of certain cases such as presence of a \u0027\u003c\u0027 character."
    }
  ],
  "id": "CVE-2026-77647",
  "lastModified": "2026-08-20T23:16:28.647",
  "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"
      }
    ]
  },
  "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": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-94"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Primary"
    }
  ]
}



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