CVE-2026-25892

Name: CVE-2026-25892
Creator: NVD / NIST
Published: 2026-02-09T22:16:04.023+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.59%

Last modified Jun 17, 2026

CVE-2026-25892 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.59% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.59%

72.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Adminer	Adminer	>= 4.6.2, < 5.4.2

References

https://github.com/vrana/adminer/commit/21d3a3150388677b18647d68aec93b7850e457d3Patch
https://github.com/vrana/adminer/releases/tag/v5.4.2Product, Release Notes
https://github.com/vrana/adminer/security/advisories/GHSA-q4f2-39gr-45jhExploit, Vendor Advisory

Timeline

Published: Feb 9, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-25892?

How severe is CVE-2026-25892?

CVE-2026-25892 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.59% probability of exploitation in the next 30 days.

How do I fix CVE-2026-25892?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-25892?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST