CVE-2026-118423WP Libre Form Unrestricted File Upload
WP Libre Form 1.5.0.1 - Unauthenticated RCE via Arbitrary File Upload
Published Nov 6, 2026 · Updated Nov 6, 2026 · Also known as EUVD-2026-117971, GHSA-mhrf-qjwq-4j74
Key Facts
Patch immediately- CVE-2026-118423 is a critical-severity vulnerability (CVSS 10.0 v3.1) affecting WP Libre Form.
- It is exploited in the wild, listed in Industry KEV feed since Nov 6, 2026. No public exploit code is known.
- EPSS estimates a 0.6% 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
10.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
0.6%
Higher than 47.3% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
60/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Nov 6, 2026
0 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
2
Proof-of-concept links
In-the-wild evidence
2
Reports of active use
Description
The WP Libre Form WordPress plugin 1.5.0.1 does not validate the type of files uploaded through its form submissions, allowing unauthenticated attackers to upload PHP files to a web-accessible location and execute them, leading to remote code execution.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Nov 6, 2026 | n/a | Not reported |
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| WP Libre Form | >= 1.5.0.1 | n/a |
Timeline
Publicly disclosed
Nov 6, 2026
Added to Industry KEV feed
Nov 6, 2026
Weakness Type
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
FAQ
Common Questions.
The WP Libre Form WordPress plugin 1.5.0.1 does not validate the type of files uploaded through its form submissions, allowing unauthenticated attackers to upload PHP files to a web-accessible location and execute them, leading to remote code execution.
Affected: WP Libre Form versions >= 1.5.0.1. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Nov 6, 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-2026-118423 On Your Attack Surface?
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