AdminNeo Vulnerable to XSS via Rogue MySQL Server Version String (CSP Nonce Bypass)

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

8.2 · CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N · score source

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

Summary AdminNeo inserts the database server's version string into a ` ` tag that carries a valid CSP nonce, without any sanitization. A rogue database server can return a crafted version string that breaks out of the JavaScript context and executes arbitrary code. Because the script tag already has a valid nonce, the browser's Content Security Policy does not block execution. No authentication is required when combined with Login CSRF. Originally reported in Adminer: https://github.com/vrana/adminer/security/advisories/GHSA-h6jr-7pr6-grgj

Prerequisites - Target runs AdminNeo - Attacker controls a reachable MySQL server (a 80-line Python script)

Root Cause `admin/core/Admin.php`, lines 1285-1286: ```php echo script("let autocompletion;\nwindow.addEventListener('DOMContentLoaded', () => { initSyntaxHighlighting('" . Connection::get()->getVersion() . "', '" . Connection::get()->getFlavor() . "', autocompletion); });"); ``` `script()` wraps the output in ` `. Return value of…

Published by the source

30 Oct 2026, 22:52 UTC

Last modified by the source

30 Oct 2026, 23:00 UTC

Source last checked

31 Oct 2026, 06:45 UTC

1. Revision 2 · amended · 31 Oct 2026

   Amended from osv record GHSA-rx7m-wxwq-vxr9

2. Revision 1 · created · 30 Oct 2026

   Published from ghsa record GHSA-rx7m-wxwq-vxr9

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# Patch Next advisory brief: CVE-2026-96632

Advisory: AdminNeo Vulnerable to XSS via Rogue MySQL Server Version String (CSP Nonce Bypass)
IDs: CVE-2026-96632, GHSA-rx7m-wxwq-vxr9
Record: https://patchnext.com/advisories/cve-2026-96632 (revision 2, source checked 31 Oct 2026, 06:45 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.2)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: adminneo-org/adminneo 5.5.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist adminneo-org/adminneo: affected < 5.5.1; fixed in 5.5.1

## Suggested inspection (read-only)
- Packagist adminneo-org/adminneo: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on adminneo-org/adminneo.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-rx7m-wxwq-vxr9 (GitHub-reviewed advisory GHSA-rx7m-wxwq-vxr9 lists affected ranges: Packagist adminneo-org/adminneo >=0 <5.5.1)
- Verified: https://osv.dev/vulnerability/GHSA-rx7m-wxwq-vxr9 (OSV record GHSA-rx7m-wxwq-vxr9 lists affected ranges: Packagist adminneo-org/adminneo >=0 <5.5.1 (fixed))

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