Medium severity · published Aug 8, 2026
CVE-2026-16953
AI Engine < 3.6.4 - Unauthenticated Cross-Session Chatbot File Deletion via Forgeable Session Cookie
4.8
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AE
AI Engine ·
before 3.6.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16953
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16953
wpscan.com
https://wpscan.com/vulnerability/8f5460a7-9764-4ce1-9cb4-8202b192765d/
More from AI Engine
8.1
CVE-2026-12511
AI Engine < 3.5.5 - Editor+ Arbitrary File Write via Path Traversal
7.7
CVE-2026-75797
AI Engine 3.3.3 - 3.7.1 - Subscriber+ Arbitrary File Read via 'url' Parameter
7.2
CVE-2026-75796
AI Engine 2.8.0 - 3.6.0 - Admin+ Multisite Network Administrator Account Takeover via MCP User Tools
7.2
CVE-2024-10499
AI-Engine < 2.6.5 - Admin+ SQLi
6.5
CVE-2026-16954
AI Engine < 3.6.4 - Editor+ Sensitive Information Disclosure of API Key and Bearer Tokens