CVE-2026-25892

7.5 highEPSS 1.7%

High (7.5) in adminer adminer. EPSS 1.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

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

EPSS: 1.7% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2026-02-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

adminer:adminer

References

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

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