🛡️ CVE-2026-25892
🟠 CVSS 8.0 — High ⚠️ Exploit Public CWE-20 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-20
Public Exploit ⚠️ Yes
Source NVD
Published 2026-02-09
Updated 2026-06-02
Modified 2026-02-20

Affected Packages

Software From version Fixed in
adminer 4.6.2 5.4.2
vrana/adminer 4.6.2 5.4.2

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