CVE-2026-2839
Mở trang đầy đủCVSS 5.3 MEDIUM Truy cập trái phép
Advanced Custom Fields: Extended <= 0.9.2.7 - Missing Authorization to Unauthenticated Data Exposure via Multiple AJAX Endpoints
Mô tả
The Advanced Custom Fields: Extended plugin for WordPress is vulnerable to unauthorized access of data and triggering of server-side actions in all versions up to, and including, 0.9.2.7. This is due to multiple AJAX handlers registered for unauthenticated users (wp_ajax_nopriv_*) that fail to implement proper current_user_can() authorization checks. While these handlers use ACF's acf_verify_ajax() function to validate cryptographic nonces, the acf_nonce values are generated for guest users and publicly exposed in the page source of any frontend page utilizing an ACF form. This makes it possible for unauthenticated attackers to extract the guest nonce and bypass WordPress visibility permissions, leading to the unauthorized disclosure of post titles and internal Flexible Content layout structures. The vulnerability was partially patched in version 0.9.2.4.
Điểm và phân loại
- CVSS
- 5.3 MEDIUM v3.1
- Nguồn điểm
- NVD
- Mức độ (theo nguồn)
- MEDIUM
- EPSS
- —
- CWE
- CWE-862
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Ảnh hưởng
Sản phẩm
- hwk-fr Advanced Custom Fields: Extended
Vì sao bị lọc
- CVSS 5.3 < 8.0 và không thuộc CISA KEV
Loại tác động
- Truy cập trái phép
- CWE-862; từ khoá "missing authorization"
Dữ liệu riêng của nguồn
- CVE.org · Đơn vị cấp mã
- Wordfence
- CVE.org · SSVC
- Tự động hoá được: yes · Khai thác: none · Tác động kỹ thuật: partial
Tham khảo
- https://plugins.trac.wordpress.org/browser/acf-extended/trunk/includes/fields/field-advanced-link.php#L25
- https://plugins.trac.wordpress.org/browser/acf-extended/trunk/includes/fields/field-advanced-link.php#L603
- https://plugins.trac.wordpress.org/browser/acf-extended/trunk/includes/fields/field-flexible-content-async.php#L151
- https://plugins.trac.wordpress.org/browser/acf-extended/trunk/includes/fields/field-flexible-content-async.php#L24
- https://plugins.trac.wordpress.org/changeset/3516027/
- https://plugins.trac.wordpress.org/changeset/3754818/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/9954ef37-bae0-48fb-9654-ff54750c46c2?source=cve