CVE-2026-25892
Adminer has an Unauthenticated Persistent DoS via Array Injection in ?script=version Endpoint
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.
INFO
Published Date :
Feb. 9, 2026, 10:16 p.m.
Last Modified :
Feb. 20, 2026, 8:24 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Upgrade Adminer to version 5.4.2 or later.
- Apply the vendor-supplied patch.
- Ensure origin validation is properly configured.
Public PoC/Exploit Available at Github
CVE-2026-25892 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-25892.
| URL | Resource |
|---|---|
| https://github.com/vrana/adminer/commit/21d3a3150388677b18647d68aec93b7850e457d3 | Patch |
| https://github.com/vrana/adminer/releases/tag/v5.4.2 | ProductRelease Notes |
| https://github.com/vrana/adminer/security/advisories/GHSA-q4f2-39gr-45jh | ExploitVendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-25892 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-25892
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CVE_2026_25892 BY DZ MIND INJECTOR
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-25892 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-25892 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 20, 2026
Action Type Old Value New Value Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:adminer:adminer:*:*:*:*:*:*:*:* versions from (including) 4.6.2 up to (excluding) 5.4.2 Added Reference Type GitHub, Inc.: https://github.com/vrana/adminer/commit/21d3a3150388677b18647d68aec93b7850e457d3 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/vrana/adminer/releases/tag/v5.4.2 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/vrana/adminer/security/advisories/GHSA-q4f2-39gr-45jh Types: Exploit, Vendor Advisory -
New CVE Received by [email protected]
Feb. 09, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-20 Added Reference https://github.com/vrana/adminer/commit/21d3a3150388677b18647d68aec93b7850e457d3 Added Reference https://github.com/vrana/adminer/releases/tag/v5.4.2 Added Reference https://github.com/vrana/adminer/security/advisories/GHSA-q4f2-39gr-45jh