AdminNeo: CSRF Token Secret Recoverable from Single Observed Token, Enabling Cross-Site Request Forgery

Exploitation

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

CVSS

6.8 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

Summary AdminNeo's CSRF protection uses a BREACH-resistant XOR masking scheme, but the implementation transmits both the XOR mask and the masked value in every token. This allows any observer who sees a single CSRF token (via network sniffing, log files, Referrer header, or XSS) to instantly recover the session secret and forge unlimited valid CSRF tokens. Additionally, the underlying session token has only ~20 bits of entropy (`rand(1, 1e6)`), making blind brute-force feasible even without token observation. Originally reported by @az0mb13 in Adminer: GHSA-q4f2-39gr-45jh

Details Token generation in `admin/include/functions.inc.php` lines 1181-1184: ```php function get_token() { $rand = rand(1, 1e6); return ($rand ^ $_SESSION["token"]) . ":$rand"; } ``` Token verification in lines 1189-1192: ```php function verify_token() { list($token, $rand) = explode(":", $_POST["token"]); return ($rand ^…

Published by the source

30 Oct 2026, 22:51 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-wm25-49w3-5qrg

2. Revision 1 · created · 30 Oct 2026

   Published from ghsa record GHSA-wm25-49w3-5qrg

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# Patch Next advisory brief: CVE-2026-96629

Advisory: AdminNeo: CSRF Token Secret Recoverable from Single Observed Token, Enabling Cross-Site Request Forgery
IDs: CVE-2026-96629, GHSA-wm25-49w3-5qrg
Record: https://patchnext.com/advisories/cve-2026-96629 (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: Medium (CVSS 6.8)
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-wm25-49w3-5qrg (GitHub-reviewed advisory GHSA-wm25-49w3-5qrg lists affected ranges: Packagist adminneo-org/adminneo >=0 <5.5.1)
- Verified: https://osv.dev/vulnerability/GHSA-wm25-49w3-5qrg (OSV record GHSA-wm25-49w3-5qrg lists affected ranges: Packagist adminneo-org/adminneo >=0 <5.5.1 (fixed))

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