Vulnerability details

CVE-2026-25892

vrana adminer

Adminer has an Unauthenticated Persistent DoS via Array Injection in ?script=version Endpoint

CVSS 3.1

7.5High

Official 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 scores

Score	Version	Source	Vector
7.5High	3.1	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`

Affected products

Vendor	Product	Versions	Source
vrana	adminer	>= 4.6.2, < 5.4.2	CVEProject cvelistV5 (CNA)

References and advisories

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

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Details

Published: 2026-02-10
Last updated: 2026-02-10
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

1.69%

Probability of exploitation in 30 days

77.1%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-20
Improper Input Validation