CVE-2026-25892

HIGH EPSS 72.5%
Published Feb 9, 20264mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Feb 9, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
72.5% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-20 Improper Input Validation Validation

Affected Products 1

VendorProductVersionRange
admineradminer*≥4.6.2  –  <5.4.2

References 3

  • github.com https://github.com/vrana/adminer/commit/21d3a3150388677b18647d68aec93b7850e457d3
    Patch
  • github.com https://github.com/vrana/adminer/releases/tag/v5.4.2
    ProductRelease Notes
  • github.com https://github.com/vrana/adminer/security/advisories/GHSA-q4f2-39gr-45jh
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/vrana/adminer/commit/21d3a3150388677b18647d68aec93b7850e457d3
    Patch