pagekit CMS up to 1.0.18 PHP saveAction authorization

Summaryinfo

A vulnerability has been found in pagekit CMS up to 1.0.18 and classified as critical. Affected by this vulnerability is the function UserApiController::saveAction of the component PHP Handler. This manipulation causes authorization. This vulnerability only affects products that are no longer supported by the maintainer. The identification of this vulnerability is CVE-2026-57518. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in pagekit CMS up to 1.0.18. It has been declared as critical. Affected by this vulnerability is the function UserApiController::saveAction of the component PHP Handler. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Pagekit CMS 1.0.18 contains a privilege escalation vulnerability that allows authenticated users with the 'user: manage users' permission to escalate privileges by assigning arbitrary custom roles to themselves due to missing authorization checks in UserApiController::saveAction(). Attackers can assign themselves a custom role with the 'system: manage packages' permission and then upload and install a malicious PHP package through the admin package installer to achieve remote code execution.

The weakness was shared by Saidakbarxon Maqsudxonov. The advisory is shared at gist.github.com. This vulnerability is known as CVE-2026-57518 since 06/24/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/26/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• pagekit

Name

• CMS

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12
• 1.0.13
• 1.0.14
• 1.0.15
• 1.0.16
• 1.0.17
• 1.0.18

Support

• end of life

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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