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CVE-2026-25892

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

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
vrana / admineraffected >= 4.6.2, < 5.4.2

CWE

CWE-20

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.