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CVE-2026-57518— Pagekit CMS 1.0.18 Privilege Escalation via UserApiController

Quick assessment

Affected
pagekit pagekit
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Pagekit是Pagekit公司开源的一套模块化的、轻量级CMS(内容管理系统)。 Pagekit 1.0.18版本存在授权问题漏洞，该漏洞源于UserApiController::saveAction()中缺失授权检查，可能导致拥有'user: manage users'权限的已认证用户通过分配自定义角色以实现权限提升。

CVSS 8.8 · High EPSS 0.69% · P51

Affected Version Matrix 1

VendorProduct Version RangeStatus
pagekit pagekit ≤ 1.0.18 affected
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I. Basic Information for CVE-2026-57518

Vulnerability Information
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Vulnerability Title
Pagekit CMS 1.0.18 Privilege Escalation via UserApiController
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
pagekit 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pagekit是Pagekit公司开源的一套模块化的、轻量级CMS(内容管理系统)。 Pagekit 1.0.18版本存在授权问题漏洞，该漏洞源于UserApiController::saveAction()中缺失授权检查，可能导致拥有'user: manage users'权限的已认证用户通过分配自定义角色以实现权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pagekit pagekit 0 ~ 1.0.18 -

II. Public POCs for CVE-2026-57518

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III. Intelligence Information for CVE-2026-57518

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Vendor Advisories for CVE-2026-57518 (1)

Proof of Concept for CVE-2026-57518 (1)

IV. Related Vulnerabilities

Same product: pagekit
Same vendor: pagekit
Same weakness: CWE-862

V. Comments for CVE-2026-57518

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