Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Unknown AI Engine — AI Engine < 3.6.4 - Unauthenticated Cross-Session Chatbot File Deletion via Forgeable Session Cookie
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H N N U N L L 4.8 .0017 6.8 —
AFFECTED
Product Versions Fixed
AI Engine unspecified —
TIMELINE
Jul 24 Reserved by WPScan
Aug 8 Published (CNA: WPScan)
Aug 10 EXPLOIT PUBLISHED — CVE-2026-16953 (Unknown AI Engine). Public exploit reference added.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| July 24, 2026 | Reserved | Reserved by WPScan |
| August 8, 2026 | Published | Published (CNA: WPScan) |
| August 10, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-16953 (Unknown AI Engine). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Unknown | AI Engine | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-16953 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.