The AI Engine – The Chatbot and AI Framework for WordPress plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the rest_helpers_update_media_metadata function in all versions up to, and including, 3.3.2. This makes it possible for authenticated attackers, with Editor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible. The attacker can upload a benign image file, then use the update_media_metadata endpoint to rename it to a PHP file, creating an executable PHP file in the uploads directory.
CVE-2026-1400
Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-01-28. NVD baseline CVSS 7.2; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.2
- EG Score
- 7.2(medium)
- EG Risk
- 33(Track)EG Risk 33/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity72% × 45%Exploitation1% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 51%
- KEV
- Not listed
Published
January 28, 2026
Last Modified
June 17, 2026
References (4)
- security@wordfencehttps://plugins.trac.wordpress.org/browser/ai-engine/tags/3.3.0/classes/rest.php#L1104
- security@wordfencehttps://plugins.trac.wordpress.org/browser/ai-engine/tags/3.3.0/classes/rest.php#L1141
- security@wordfencehttps://plugins.trac.wordpress.org/changeset/3447500/ai-engine/trunk/classes/rest.php
- security@wordfencehttps://www.wordfence.com/threat-intel/vulnerabilities/id/d5227269-4406-4fcf-af37-f1db0af857d6?source=cve
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 3× in last 7d / 22× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 167 total refreshes for this CVE.
- 2026-09-18 19:27 UTCEPSS rescore
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Related CVEs(same CWE)
Same CWE
10 shownCWE-434
Frequently asked(5)
What is CVE-2026-1400?
When was CVE-2026-1400 disclosed?
Is CVE-2026-1400 actively exploited?
What is the CVSS score of CVE-2026-1400?
How do I remediate CVE-2026-1400?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-1400
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