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CVE-2026-103883— 6Storage Rentals 2.31.0 认证绕过漏洞

一分钟漏洞结论

影响对象
sixstorage 6Storage Rentals
利用判断
尚无明确在野利用证据,仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本;无法立即升级时,限制受影响服务暴露并加强监测。

WordPress 的 6Storage Rentals 插件在所有 2.31.0 及更早版本中存在身份验证绕过漏洞,可导致管理员账户被接管。该漏洞源于 AJAX 处理器(注册在 钩子上)在将调用者提供的 POST 参数写入同名的站点级选项时,未执行任何权限检查,也未进行 nonce 验证。随后,未经验证的 处理器会从由该攻击者控制的 URL 响应中获取并兑现一个临时缓存(transient),并在未进行任何所有权或凭证验证的情况下,无条件调用 和 。这使得拥有订阅者(Subscriber)及以上权限的已认证攻击者

CVSS 8.8 · High
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一、 漏洞 CVE-2026-103883 基础信息

漏洞信息

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Vulnerability Title
6Storage Rentals <= 2.31.0 - Authenticated (Subscriber+) Authentication Bypass to Administrator Account Takeover via 'six_storage_online_api_url' Option Poisoning + Transient-Backed Auth Bypass
来源: CVE Program / CVE List V5
Vulnerability Description
The 6Storage Rentals plugin for WordPress is vulnerable to Authentication Bypass leading to Administrator Account Takeover in all versions up to, and including, 2.31.0. The vulnerability exists because the `six_storage_portal_registration()` AJAX handler — registered on `wp_ajax_six_storage_portal_plugin_registration` — performs no capability check and no nonce verification before writing the caller-supplied `six_storage_online_api_url` POST parameter to the site-wide option of the same name; the unauthenticated `six_storage_create_wp_user()` handler then redeems a transient seeded from that attacker-controlled URL's response and unconditionally calls `wp_set_current_user()` and `wp_set_auth_cookie()` with no ownership or credential verification. This makes it possible for authenticated attackers, with Subscriber-level access and above, to authenticate as any existing WordPress user — including any administrator whose email address is known or guessable — resulting in full site compromise. This issue represents an incomplete fix for a prior vulnerability: the 2.29.0 remediation moved the target email out of POST data into a server-side transient, but because any Subscriber can still overwrite the outbound API URL that populates that transient, the full authentication bypass chain remains exploitable in three AJAX requests.
来源: 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
来源: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
sixstorage 6Storage Rentals 0 ~ 2.31.0 -

二、漏洞 CVE-2026-103883 的公开POC

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三、漏洞 CVE-2026-103883 的情报信息

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CVE-2026-103883 其他参考 (6)

IV. Related Vulnerabilities