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CVE-2026-16953— AI Engine < 3.6.4 - Unauthenticated Cross-Session Chatbot File Deletion via Forgeable Session Cookie

Quick assessment

Affected
Unknown AI Engine
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 AI Engine是WordPress基金会开源的一款机器学习引擎软件。 WordPress AI Engine 3.6.4之前版本存在安全漏洞，该漏洞源于未验证上传的聊天机器人文件的所有权，仅通过客户端提供的会话cookie值授权删除操作，可能导致未经身份验证的攻击者获取受害者会话标识和文件引用后删除受害者上传的文件。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.27% · P18

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown AI Engine < 3.6.4 affected
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I. Basic Information for CVE-2026-16953

Vulnerability Information
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Vulnerability Title
AI Engine < 3.6.4 - Unauthenticated Cross-Session Chatbot File Deletion via Forgeable Session Cookie
Source: CVE Program / CVE List V5
Vulnerability Description
The AI Engine WordPress plugin before 3.6.4 does not verify ownership of a guest's uploaded chatbot files before deletion, authorising the action solely by a client-supplied session cookie value, so an unauthenticated attacker who obtains a victim's session identifier and file reference can delete that victim's uploaded files.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress AI Engine 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress AI Engine是WordPress基金会开源的一款机器学习引擎软件。 WordPress AI Engine 3.6.4之前版本存在安全漏洞，该漏洞源于未验证上传的聊天机器人文件的所有权，仅通过客户端提供的会话cookie值授权删除操作，可能导致未经身份验证的攻击者获取受害者会话标识和文件引用后删除受害者上传的文件。
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
Unknown AI Engine 0 ~ 3.6.4 -

II. Public POCs for CVE-2026-16953

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III. Intelligence Information for CVE-2026-16953

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Vendor Advisories for CVE-2026-16953 (1)

Same Patch Batch · Unknown · 2026-08-08 · 17 CVEs total

CVE-2026-16955 AI Engine < 3.6.6 - Subscriber+ Arbitrary File Read via Audio Transcription
CVE-2026-16595 WP Directory Kit < 1.5.5 - Subscriber+ User and Unpublished Listing Disclosure
CVE-2026-16608 Download Monitor < 5.2.6 - Unauthenticated Download Log Injection
CVE-2026-16948 Solace Extra < 1.6.1 - Subscriber+ Multiple Missing Authorization via Site-Wide Nonce Expo
CVE-2026-16594 WP Directory Kit < 1.5.5 - Subscriber+ Plugin Settings and API Key Disclosure
CVE-2026-16590 WP Directory Kit < 1.5.5 - Subscriber+ Contact Message and User Data Disclosure
CVE-2026-16578 Admin Safety Guard < 1.4.0 - Unauthenticated User Data Disclosure via 2fa/app/users REST R
CVE-2026-16574 Dokan < 5.0.11 - Vendor+ Cross-Vendor Downloadable Product Access Grant via Order Download
CVE-2026-16562 WP Statistics < 14.16.10 - Subscriber+ Sensitive Data Disclosure via Metabox AJAX Handlers
CVE-2026-16589 WP Directory Kit < 1.5.5 - Subscriber+ SQL Injection via data_fields_list Parameter
CVE-2026-16535 Link Library < 7.9.4 - Reflected XSS via Thumbs-Rating likelabel
CVE-2026-16282 Appointment Hour Booking < 1.5.88 - Unauthenticated Booking Price Manipulation via tcost P
CVE-2026-16558 YMC Filter < 3.12.8 - Contributor+ Stored XSS via Layout Builder Schema
CVE-2026-16269 Newsletters < 4.16 - Unauthenticated API Authentication Bypass via Type Juggling
CVE-2026-16559 YMC Filter < 3.12.9 - Author+ Stored XSS via SVG Icon Upload
CVE-2026-16267 Newsletters < 4.16 - Unauthenticated PHP Object Injection via Date Form Field

IV. Related Vulnerabilities

Same product: AI Engine
Same vendor: Unknown

V. Comments for CVE-2026-16953

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