PT-2026-81131 · Adminer · Adminer

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CVE-2026-56704

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Published

2026-08-25

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Updated

2026-08-25

CVSS v3.1

6.1

Medium

VectorAV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Name of the Vulnerable Software and Affected Versions Adminer versions prior to 5.4.3
Description The software inserts unsanitized database server version strings into script tags containing valid Content Security Policy (CSP) nonces without proper validation. An attacker controlling a rogue MySQL server can provide crafted version strings to break out of the JavaScript context and execute arbitrary code, effectively bypassing CSP protections.
Recommendations Update to version 5.4.3 or later.

Exploit

Fix

XSS

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Weakness Enumeration

Related Identifiers

CVE-2026-56704
GHSA-H6JR-7PR6-GRGJ

Affected Products

Adminer