Medium 6.1Published Aug 25, 2026

CVE-2026-56704Adminer before 5.4.3 Cross-Site Scripting via MySQL Version String

Updated under an hour ago (2026-10-19 07:20 UTC)

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It affects vrana adminer. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for vrana adminer

Exploited in the last 30 days

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: 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Aug 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

vrana adminer vrana:adminer (from the name)	before 5.4.3; 5.4.3 not affected	CNA record

References

https://github.com/vrana/adminer/security/advisories/GHSA-h6jr-7pr6-grgjvendor-advisory
https://www.vulncheck.com/advisories/adminer-before-cross-site-scripting-via-mysql-version-stringthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.