AI Engine < 3.6.4 - Unauthenticated Cross-Session Chatbot File Deletion via Forgeable Session Cookie
Priority LOW 22CWE-639Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00272 19th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed AI Engine (Unknown): 3.6.4
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | AI Engine | before 3.6.4 | 3.6.4 | Patch available | CNA |
- AI Engine VendorUnknown Affected before 3.6.4 Fixed in 3.6.4 Patch available CNA
Remediation
- Fix · CNA AI Engine (Unknown) Fixed in 3.6.4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16953
- 2026-10-03 Alias added: GHSA-rv7j-gq5m-787c
References
Sources
- CVE-2026-16953 · CVE Program
- CVE-2026-16953 · NVD
- FIRST EPSS
- GHSA-rv7j-gq5m-787c · GitHub Advisory Database · CC BY 4.0
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