CVE-2026-1499Network attack vector

Remote code execution via chained upload bypass

Published Feb 6, 2026 · Updated Feb 6, 2026

Missing authorization in Revmakx WP Duplicate 1.1.8 and earlier allows remote authenticated users to upload arbitrary files. The process_add_site() AJAX handler omits a capability check and lets a subscriber set prod_key_random_id; handle_upload_single_big_file() then accepts a traversal path and writes attacker-controlled content. Subscriber access is required for the first step, after which the stored key bypasses upload authentication and enables server-side code execution.

CVSS severity8.8
High
EPSS probability0.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Revmakx WP Duplicate 1.1.8 and earlier allows remote authenticated users to upload arbitrary files. The process_add_site() AJAX handler omits a capability check and lets a subscriber set prod_key_random_id; handle_upload_single_big_file() then accepts a traversal path and writes attacker-controlled content. Subscriber access is required for the first step, after which the stored key bypasses upload authentication and enables server-side code execution.

The record

CVE
CVE-2026-1499
Published
Feb 6, 2026
Updated
Feb 6, 2026
Vendor
Revmakx
Product
WP Duplicate – WordPress Migration Plugin
Classifications
CWE-862, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=1.1.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Revmakx · WP Duplicate – WordPress Migration Pluginversion=* <=1.1.8

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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