CVE-2026-16953CWE-639

CVE-2026-16953

Medium · published August 8, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
18.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00272 · 18.5th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-08-08T11:17Z
References (1)
https://wpscan.com/vulnerability/8f5460a7-9764-4ce1-9cb4-8202b192765d/ · [email protected]
EPSS history
Timeline
  • 08 AUG 06:00Z
    AI Engine < 3.6.4 - Unauthenticated Cross-Session Chatbot File Deletion via Forgeable Session Cookie
    cvelistv5