adminneo-org AdminNeo up to 5.4.x Cache Serialization design.inc.php rawurlencode version[] input validation

Summaryinfo

A vulnerability identified as problematic has been detected in adminneo-org AdminNeo up to 5.4.x. This vulnerability affects the function rawurlencode of the file design.inc.php of the component Cache Serialization. Performing a manipulation of the argument version[] results in input validation. This vulnerability was named CVE-2026-59978. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in adminneo-org AdminNeo up to 5.4.x. It has been classified as problematic. This affects the function rawurlencode of the file design.inc.php of the component Cache Serialization. The manipulation of the argument version[] with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

AdminNeo is a full-featured database management tool written in PHP. From 4.6.2 until 5.5.0, the unauthenticated `?script=version` endpoint accepts POST data without origin, CSRF or parameter-type validation. A `version[]` parameter becomes a PHP array that `bootstrap.inc.php` serializes into the shared `adminneo.version` cache. On later page loads, `design.inc.php` passes that cached value to `cookie()` and `rawurlencode()`, causing a `TypeError` rather than encoding a version string. A remote attacker can make the instance return HTTP 500 to all users for the cache's twenty-four-hour lifetime or until the poisoned cache is removed. Exploitation requires the web server to be able to write that shared cache; making it unwritable is an interim workaround. The issue retains the underlying type-validation defect reported previously in Adminer despite changes to AdminNeo's version-checking flow. This issue is fixed in version 5.5.0.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-59978 since 07/07/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

By approaching the search of inurl:design.inc.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 5.5.0 eliminates this vulnerability.

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Productinfo

Vendor

• adminneo-org

Name

• AdminNeo

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4

Website

• Product: https://github.com/adminneo-org/adminneo/

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