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CVE-2026-92619— Booking Calendar <= 11.8.2 - Authenticated (Editor+) Privilege Escalation to 'data_name' Parameter

Quick assessment

Affected
wpdevelop Booking Calendar
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 插件 Booking Calendar 在所有 11.8.2 及以下版本中存在权限提升漏洞，该漏洞可通过 AJAX 操作被利用。 漏洞成因在于： 函数仅对通过 显式注册的选项名称应用逐选项安全防护措施。因此，对于任何未注册的选项名称（包括 WordPress 核心选项）， 将返回空策略，从而绕过所有 、 和 检查。与此同时，攻击者可控的 参数仅经过 处理，随后被直接传递给 ，且未施加任何额外限制。 这使得拥有编辑（Editor）级别或更高权限的已认证攻击者能够提升其权限至管理员（Administ

CVSS 7.2 · High EPSS 0.37% · P31

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpdevelop Booking Calendar ≤ 11.8.2 affected
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I. Basic Information for CVE-2026-92619

Vulnerability Information
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Vulnerability Title
Booking Calendar <= 11.8.2 - Authenticated (Editor+) Privilege Escalation to 'data_name' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Booking Calendar plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 11.8.2 via the `wpbc_ajax_option_save` AJAX action. The vulnerability exists because the `handle_ajax_save()` function applies per-option safeguards only to names explicitly registered via `register_option_policy()`, causing `get_option_policy()` to return an empty policy — bypassing all can_save, force_mode, and allowed_keys checks — for any unregistered option name, including core WordPress options, while an attacker-controlled `data_name` parameter passes through `sanitize_key()` and is written directly to `update_option()` without restriction. This makes it possible for authenticated attackers with Editor-level access and above to escalate their privileges to Administrator by writing core WordPress options such as `default_role=administrator` and `users_can_register=1`, then self-registering a new Administrator account. The nonce check does not meaningfully restrict this attack, as both the nonce value and nonce action are attacker-supplied POST parameters, and a valid nonce is trivially obtainable via `admin-ajax.php?action=rest-nonce`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
wpdevelop Booking Calendar 0 ~ 11.8.2 -

II. Public POCs for CVE-2026-92619

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III. Intelligence Information for CVE-2026-92619

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Other References for CVE-2026-92619 (3)

IV. Related Vulnerabilities

Same product: Booking Calendar
Same vendor: wpdevelop
Same weakness: CWE-269

V. Comments for CVE-2026-92619

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