Tiare Membership <= 1.2 - 未认证权限提升

该漏洞的潜在影响非常严重。攻击者可以利用此漏洞绕过身份验证机制，直接获得 WordPress 站点的管理员权限。一旦获得管理员权限，攻击者可以完全控制站点，包括修改内容、安装恶意软件、窃取敏感数据，甚至完全破坏站点。由于 WordPress 广泛使用，该漏洞可能影响大量网站，造成广泛的安全风险。攻击者可以利用此漏洞进行数据泄露、网站篡改、恶意代码注入等活动，对用户和网站运营者造成重大损失。

WordPress websites utilizing the Tiare Membership plugin, particularly those with limited security hardening or those running older, unpatched versions of the plugin, are at significant risk. Shared hosting environments where multiple websites share the same server resources are also at increased risk, as a compromise of one site could potentially lead to the compromise of others.

• wordpress / plugin: Use wp-cli to check the plugin version:

wp plugin list | grep tiare-membership

• wordpress / plugin: Search plugin files for the vulnerable function tiaremembershipinitrestapi_register using grep:

grep -r 'tiare_membership_init_rest_api_register' /path/to/wp-content/plugins/tiare-membership/

• wordpress / logs: Monitor WordPress access logs for POST requests to /wp-json/tiare-membership/v1/register with suspicious parameters, particularly those attempting to set the role to 'administrator'. • generic web: Check for unusual user registration patterns via curl:

curl -X POST -d 'username=test&[email protected]&role=administrator' http://your-wordpress-site.com/wp-json/tiare-membership/v1/register

1. 2025-11-27Disclosure

   disclosure

2. 2025-11-27Patch

   patch

1. 已保留2025-11-22
2. 发布日期2025-11-27
3. 修改日期2026-04-08
4. EPSS 更新日期2026-03-23

最有效的缓解措施是立即升级 Tiare Membership 插件至 1.3 版本或更高版本。如果无法立即升级，可以考虑以下临时缓解措施：限制用户注册时可选择的角色，例如仅允许 'subscriber' 或 'contributor' 角色。实施更严格的身份验证和授权机制，例如启用双因素身份验证。定期审查用户角色和权限，确保没有不必要的管理员权限。使用 WordPress 安全插件，增强站点的安全防护能力。