CVE-2026-123751WP Duplicate Unrestricted File Upload
WP Duplicate <= 1.1.11 - Unauthenticated Arbitrary File Upload via Authentication Bypass
Published Nov 9, 2026 · Updated Nov 9, 2026 · Also known as EUVD-2026-119835, GHSA-v9cp-82qp-rrj6
Key Facts
Patch immediately- CVE-2026-123751 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting WP Duplicate.
- It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Nov 7, 2026. No public exploit code is known.
- EPSS estimates a 0.3% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
0.3%
Higher than 20.2% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
52/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Nov 7, 2026
-2 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Description
The WP Duplicate WordPress plugin through 1.1.11 does not properly verify a request authentication value and does not validate the path or type of uploaded files, making it possible for unauthenticated attackers to write arbitrary files to the server and achieve remote code execution. This vulnerability is being actively exploited in the wild.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CIRCL KEV | Nov 7, 2026 | n/a | Not reported |
| Industry KEV feed | Nov 7, 2026 | n/a | Not reported |
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| WP Duplicate | See advisory | n/a |
Timeline
Added to CIRCL KEV
Nov 7, 2026
Added to Industry KEV feed
Nov 7, 2026
Publicly disclosed
Nov 9, 2026
Weakness Type
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
FAQ
Common Questions.
The WP Duplicate WordPress plugin through 1.1.11 does not properly verify a request authentication value and does not validate the path or type of uploaded files, making it possible for unauthenticated attackers to write arbitrary files to the server and achieve remote code execution.
Affected: WP Duplicate. The full list is in the CVE brief.
It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Nov 7, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2026-123751 On Your Attack Surface?
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