FKIE_CVE-2026-25892

Vulnerability from fkie_nvd - Published: 2026-02-09 22:16 - Updated: 2026-02-20 20:24
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from any source. An attacker can POST version[] parameter which PHP converts to an array. On next page load, openssl_verify() receives this array instead of string and throws TypeError, returning HTTP 500 to all users. Upgrade to Adminer 5.4.2.
References
security-advisories@github.comhttps://github.com/vrana/adminer/commit/21d3a3150388677b18647d68aec93b7850e457d3Patch
security-advisories@github.comhttps://github.com/vrana/adminer/releases/tag/v5.4.2Product, Release Notes
security-advisories@github.comhttps://github.com/vrana/adminer/security/advisories/GHSA-q4f2-39gr-45jhExploit, Vendor Advisory
Impacted products
Vendor Product Version
adminer adminer *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:adminer:adminer:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0A0A483B-178F-44CC-9EB7-C469C1F8C106",
              "versionEndExcluding": "5.4.2",
              "versionStartIncluding": "4.6.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from any source. An attacker can POST version[] parameter which PHP converts to an array. On next page load, openssl_verify() receives this array instead of string and throws TypeError, returning HTTP 500 to all users. Upgrade to Adminer 5.4.2."
    },
    {
      "lang": "es",
      "value": "Adminer es un software de gesti\u00f3n de bases de datos de c\u00f3digo abierto. Adminer v5.4.1 y anteriores tiene un mecanismo de verificaci\u00f3n de versi\u00f3n donde adminer.org env\u00eda informaci\u00f3n de versi\u00f3n firmada a trav\u00e9s de JavaScript postMessage, que el navegador luego env\u00eda por POST a ?script=version. Este endpoint carece de validaci\u00f3n de origen y acepta datos POST de cualquier fuente. Un atacante puede enviar por POST el par\u00e1metro version[] que PHP convierte en un array. En la siguiente carga de p\u00e1gina, openssl_verify() recibe este array en lugar de una cadena y lanza TypeError, devolviendo HTTP 500 a todos los usuarios. Actualice a Adminer 5.4.2."
    }
  ],
  "id": "CVE-2026-25892",
  "lastModified": "2026-02-20T20:24:32.147",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-02-09T22:16:04.023",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/vrana/adminer/commit/21d3a3150388677b18647d68aec93b7850e457d3"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/vrana/adminer/releases/tag/v5.4.2"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/vrana/adminer/security/advisories/GHSA-q4f2-39gr-45jh"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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