CVE-2026-118063
Last modified
CVE-2026-118063 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The Advance Guest Post WordPress plugin through 1.9 does not properly validate uploaded files, relying on a case-sensitive and incomplete extension check that unauthenticated users can trivially bypass, allowing them to upload arbitrary files, including executable PHP variants, into a web-reachable directory, which can lead to remote code execution depending on the server configuration.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
The Advance Guest Post WordPress plugin through 1.9 does not properly validate uploaded files, relying on a case-sensitive and incomplete extension check that unauthenticated users can trivially bypass, allowing them to upload arbitrary files, including executable PHP variants, into a web-reachable directory, which can lead to remote code execution depending on the server configuration.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Advance Guest Post | <= 1.9 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-118063?
How severe is CVE-2026-118063?
How do I fix CVE-2026-118063?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-118050The Football Pool plugin for WordPress is vulnerable to Stor…6.4
- CVE-2026-118052In Eclipse ThreadX versions 6.0.1 through 6.5.2.202603, the …6.8
- CVE-2026-118054The LearnPress – Course Review plugin for WordPress is vulne…6.4
- CVE-2026-118056The Image Hover Effects Ultimate ( Image Gallery, Effects, L…4.9
- CVE-2026-118057The Shield Security – Smart Bot Blocking, Brute-Force Login …7.2
- CVE-2026-11806IBM WebSphere Application Server - Liberty 17.0.0.3 through …7.5
- CVE-2026-118064The Advance Guest Post WordPress plugin through 1.9 does not…9.8
- CVE-2026-118065The Advance Guest Post WordPress plugin through 1.9 does not…7.5
- CVE-2026-118066The Appointment Booking Plugin – LatePoint | Calendar & Sche…9.1
- CVE-2026-118067The Form Maker by 10Web – Mobile-Friendly Drag & Drop Contac…5.4
- CVE-2026-11807A missing authorization vulnerability was found in the Event…9.6
- CVE-2026-118070The Welcart e-Commerce plugin for WordPress is vulnerable to…7.2
Are you affected by CVE-2026-118063?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST