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CVE-2026-15303— 6Storage Rentals <= 2.27.0 - Unauthenticated Account Takeover via 'email' Parameter

Quick assessment

Affected
sixstorage 6Storage Rentals
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.

WordPress 6Storage Rentals是WordPress基金会的一款存储租赁管理插件。 WordPress 6Storage Rentals 2.27.0及之前版本存在授权问题漏洞，该漏洞源于six_storage_create_wp_user() AJAX处理程序未进行nonce、能力、凭据或所有权验证，可能导致未认证攻击者通过提交用户邮箱地址登录为任意现有WordPress用户（包括管理员）。

CVSS 9.8 · Critical EPSS 0.44% · P37

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
sixstorage 6Storage Rentals ≤ 2.27.0 affected
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I. Basic Information for CVE-2026-15303

Vulnerability Information
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Vulnerability Title
6Storage Rentals <= 2.27.0 - Unauthenticated Account Takeover via 'email' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The 6Storage Rentals plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.27.0. This is due to the six_storage_create_wp_user() AJAX handler being registered on wp_ajax_nopriv_six_storage_create_wp_user without any nonce, capability, credential, or ownership verification, while calling wp_set_current_user() and wp_set_auth_cookie() for any WordPress user resolved by the attacker-supplied email address. This makes it possible for unauthenticated attackers to log in as any existing WordPress user, including administrators, by submitting that user's email address.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress 6Storage Rentals 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress 6Storage Rentals是WordPress基金会的一款存储租赁管理插件。 WordPress 6Storage Rentals 2.27.0及之前版本存在授权问题漏洞，该漏洞源于six_storage_create_wp_user() AJAX处理程序未进行nonce、能力、凭据或所有权验证，可能导致未认证攻击者通过提交用户邮箱地址登录为任意现有WordPress用户（包括管理员）。
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
sixstorage 6Storage Rentals 0 ~ 2.27.0 -

II. Public POCs for CVE-2026-15303

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III. Intelligence Information for CVE-2026-15303

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News Coverage for CVE-2026-15303 (1)

IV. Related Vulnerabilities

Same product: 6Storage Rentals
Same vendor: sixstorage
Same weakness: CWE-287

V. Comments for CVE-2026-15303

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