← Vulnerability feed

Vulnerability record · CVE-2025-66736 · published 22 December 2025

CVE-2025-66736: Youlai-boot improper access control vulnerability

YYoulai · Youlai Boot

youlai-boot V2.21.1 is vulnerable to Incorrect Access Control. The importUsers function in SysUserController.java does not perform a permission check on the current user's identity, which may allow regular users to import user data into the database, resulting in an authorization bypass vulnerability.

7.1 CVSS 3.1 High EPSS 0.32% · top 77.7% CWE-284 · Improper access controlCWE-862 · Missing authorization
7.1CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

youlai-boot V2.21.1 is vulnerable to Incorrect Access Control. The importUsers function in SysUserController.java does not perform a permission check on the current user's identity, which may allow regular users to import user data into the database, resulting in an authorization bypass vulnerability.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/old6ma/be1d4a5373ee2de901ed4c8d81485046 Third Party Advisory
https://gitee.com/youlaiorg/youlai-boot/commit/9197065102f92264ded814a9d3e9f2a4ff0da121 Patch
https://gitee.com/youlaiorg/youlai-boot/issues/ICH8FV ExploitIssue TrackingVendor Advisory

Track CVE-2025-66736 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-55469Youlai-boot incorrect authorization vulnerabilityIncorrect access control in youlai-boot v2.21.1 allows attackers to escalate privileges and access the Administrator backend.EPSS 0.42%7.5CVE-2025-66735Youlai-boot improper access control vulnerabilityyoulai-boot V2.21.1 is vulnerable to Incorrect Access Control. The getRoleForm function in SysRoleController.java does not perform permission checks,…EPSS 0.44%7.5CVE-2025-55471Youlai-boot improper access control vulnerabilityIncorrect access control in the getUserFormData function of youlai-boot v2.21.1 allows attackers to access sensitive information for other users.EPSS 0.34%7.8CVE-2026-81963Windows Update Stack link-following privilege escalationWindows Update Stack resolves links improperly before accessing files, a link-following flaw (CWE-59) compounded by improper access control (CWE-284)…KEVEPSS 0.39%analysed10.0CVE-2026-21962Oracle HTTP Server and WebLogic Proxy Plug-in improper access controlOracle HTTP Server and the WebLogic Server Proxy Plug-in (for Apache HTTP Server and IIS) contain an improper access control flaw (CWE-284) in suppor…KEVEPSS 71%analysed10.0CVE-2026-34908Ubiquiti UniFi OS improper access control allows unauthorized system changesUniFi OS devices contain an improper access control flaw (CWE-284) that lets a network-reachable actor make unauthorized changes to the system. The C…KEVEPSS 15%analysed10.0CVE-2026-48907JCE editor for Joomla allows unauthenticated profile creation and PHP uploadThe JCE editor extension for Joomla permits unauthenticated users to create new editor profiles, which leads to upload and execution of PHP code. Thi…KEVEPSS 16%analysed9.8CVE-2026-35616FortiClientEMS improper access control allows unauthenticated code executionFortinet FortiClientEMS 7.4.5 through 7.4.6 contains an improper access control flaw (CWE-284) that lets an unauthenticated attacker send crafted req…KEVEPSS 9.1%analysed

Source: NIST National Vulnerability Database (record CVE-2025-66736), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.