Cross-site Scripting (XSS) Affecting adminer package, versions <5.4.3+dfsg-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.24% (16th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-ADMINER-19257276
  • published26 Aug 2026
  • disclosed25 Aug 2026

Introduced: 25 Aug 2026

NewCVE-2026-56704  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Debian:unstable adminer to version 5.4.3+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream adminer package and not the adminer package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Adminer before 5.4.3 inserts unsanitized database server version strings into script tags with valid CSP nonces without proper validation. Attackers controlling a rogue MySQL server can return crafted version strings that break out of the JavaScript context and execute arbitrary code, bypassing Content Security Policy protections.

CVSS Base Scores

version 3.1