CVE-2020-35314

CRITICAL

WonderCMS 3.1.3 - Authenticated Remote Code Execution via Theme/Plugin Installer

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 3 public exploits for CVE-2020-35314. PoCs published by zetc0de, AkashLingayat, ybdegit2020.

AI-analyzed exploit summary This exploit leverages an authenticated remote code execution vulnerability in WonderCMS 3.1.3 by installing a malicious plugin via the theme/plugin installer feature. It requires valid credentials and a session token to deploy a webshell for command execution.

Description

A remote code execution vulnerability in the installUpdateThemePluginAction function in index.php in WonderCMS 3.1.3, allows remote attackers to upload a custom plugin which can contain arbitrary code and obtain a webshell via the theme/plugin installer.

Exploits (3)

exploitdb WORKING POC
by zetc0de · pythonwebappsphp
https://www.exploit-db.com/exploits/49155

This exploit leverages an authenticated remote code execution vulnerability in WonderCMS 3.1.3 by installing a malicious plugin via the theme/plugin installer feature. It requires valid credentials and a session token to deploy a webshell for command execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: WonderCMS 3.1.3
Auth required
Prerequisites: Valid authenticated session · Access to the login URL and password · Network access to the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by AkashLingayat · poc
https://github.com/AkashLingayat/WonderCMS-CVE-2020-35314

This repository contains a fake plugin for WonderCMS 3.1.3 that includes a backdoor PHP shell (evil.php) to exploit an authenticated Remote Code Execution vulnerability (CVE-2020-35314). The exploit requires authentication and leverages a malicious plugin to achieve RCE.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: WonderCMS 3.1.3
Auth required
Prerequisites: Authenticated access to WonderCMS · Ability to upload plugins
devstral-2 · analyzed Feb 18, 2026 Full analysis →
nomisec WORKING POC
by ybdegit2020 · poc
https://github.com/ybdegit2020/wonderplugin

The repository contains a functional exploit for CVE-2020-35314, demonstrating a command injection vulnerability in WonderPlugin. The `evil.php` file executes the `id` command when a POST request with the parameter `id` is received, confirming remote code execution (RCE).

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: WonderPlugin (version not specified)
No auth needed
Prerequisites: Access to a vulnerable WonderPlugin installation · Ability to send POST requests to the target
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit, Third Party Advisory x_refsource_misc
https://zetc0de.github.io/post/authenticated-rce-ssrf-wondercms/
Product, Third Party Advisory x_refsource_misc
https://github.com/robiso/wondercms
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
https://packetstormsecurity.com/files/160311/WonderCMS-3.1.3-Remote-Code-Execution.html

Scores

CVSS v3 9.8
EPSS 0.2691
EPSS Percentile 97.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-78
Status published
Products (1)
wondercms/wondercms 3.1.3
Published Apr 20, 2021
Tracked Since Feb 18, 2026