{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1cba51cb813563eb61d963c83d28cd59f26b858d"
            },
            {
              "fixed": "c0fdd4824aca4f67e814b50703cfee1dfde41414"
            },
            {
              "fixed": "042d310bdfbc67aa9138418d838d689b34f4c87e"
            },
            {
              "fixed": "0ae663525dcbc9e996feb2a867e43bc85f960938"
            }
          ],
          "repo": "https://github.com/smarty-php/smarty",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3w63-v7pm-cq9x"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82531.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "4.5.8"
          },
          {
            "introduced": "5.0.0"
          },
          {
            "fixed": "5.8.5"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "fixed": "4.5.8"
          },
          {
            "introduced": "5.0.0"
          },
          {
            "fixed": "5.8.5"
          }
        ],
        "source": "CPE_FIELD"
      },
      {
        "extracted_events": [
          {
            "fixed": "4.5.8"
          },
          {
            "introduced": "5.x"
          },
          {
            "fixed": "5.8.5"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "Smarty before 4.5.8 and 5.x before 5.8.5 contains a code injection vulnerability where the top-level nocache_hash is never restored during extends:/multi-component template inheritance, leaving it null. Attackers can supply assigned data containing a forged SmartyNocache marker that is copied verbatim into the regenerated PHP cache file, executing arbitrary PHP on include for remote code execution.",
  "id": "CVE-2026-82531",
  "modified": "2026-10-08T02:30:57.162701070Z",
  "published": "2026-10-06T12:18:31.801Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82531.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/smarty-php/smarty/releases/tag/v4.5.8"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/smarty-php/smarty/releases/tag/v5.8.5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/smarty-php/smarty/security/advisories/GHSA-3w63-v7pm-cq9x"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82531"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/smarty-before-4.5.8-and-5-x-before-5.8.5-php-code-injection-via-extends-inheritance-cache"
    },
    {
      "type": "FIX",
      "url": "https://github.com/smarty-php/smarty/commit/1cba51cb813563eb61d963c83d28cd59f26b858d"
    },
    {
      "type": "FIX",
      "url": "https://github.com/smarty-php/smarty/commit/c0fdd4824aca4f67e814b50703cfee1dfde41414"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/smarty-php/smarty"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Smarty before 4.5.8 and 5.x before 5.8.5 PHP Code Injection via extends: Inheritance Cache"
}