{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.6.2"
                  },
                  {
                    "fixed": "5.5.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "b7ae929e6afb374f0a7aba3d73b7d441470ff907"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v5.5.0",
                "range": [
                  {
                    "fixed": "d1eb8365876c441d35e9490d00ad4354fb6f6c20"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "7cb3e768bbd34f4b01aa9a2b7fac1c7224a02b37"
            },
            {
              "fixed": "d1eb8365876c441d35e9490d00ad4354fb6f6c20"
            },
            {
              "fixed": "b7ae929e6afb374f0a7aba3d73b7d441470ff907"
            }
          ],
          "repo": "https://github.com/adminneo-org/adminneo",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-jm85-8cpp-9cjc"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59978.json"
  },
  "details": "AdminNeo is a full-featured database management tool written in PHP. From 4.6.2 until 5.5.0, the unauthenticated `?script=version` endpoint accepts POST data without origin, CSRF or parameter-type validation. A `version[]` parameter becomes a PHP array that `bootstrap.inc.php` serializes into the shared `adminneo.version` cache. On later page loads, `design.inc.php` passes that cached value to `cookie()` and `rawurlencode()`, causing a `TypeError` rather than encoding a version string. A remote attacker can make the instance return HTTP 500 to all users for the cache's twenty-four-hour lifetime or until the poisoned cache is removed. Exploitation requires the web server to be able to write that shared cache; making it unwritable is an interim workaround. The issue retains the underlying type-validation defect reported previously in Adminer despite changes to AdminNeo's version-checking flow. This issue is fixed in version 5.5.0.",
  "id": "CVE-2026-59978",
  "modified": "2026-10-31T10:30:28.529437547Z",
  "published": "2026-10-30T18:53:04.957Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59978.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/adminneo-org/adminneo/commit/b7ae929e6afb374f0a7aba3d73b7d441470ff907"
    },
    {
      "type": "WEB",
      "url": "https://github.com/adminneo-org/adminneo/releases/tag/v5.5.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/adminneo-org/adminneo/security/advisories/GHSA-jm85-8cpp-9cjc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59978"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "AdminNeo: version-cache array injection causes persistent denial of service"
}