CVE-2026-25892

7.5 HIGH
Published: February 09, 2026 Modified: February 20, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/vrana/adminer/releases/tag/v5.4.2
Source: security-advisories@github.com
Product Release Notes
https://github.com/vrana/adminer/security/advisories/GHSA-q4f2-39gr-45jh
Source: security-advisories@github.com
Exploit Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
4.6%
89th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

adminer