Yann Castel

9 exploits Active since Jan 2020
CVE-2021-24155 NOMISEC HIGH WORKING POC
Backup Guard < 1.6.0 - Authenticated Arbitrary File Upload via SGBP Import
The WordPress Backup and Migrate Plugin – Backup Guard WordPress plugin before 1.6.0 did not ensure that the imported files are of the SGBP format and extension, allowing high privilege users (admin+) to upload arbitrary files, including PHP ones, leading to RCE.
10 stars
CVSS 7.2
CVE-2019-15975 METASPLOIT CRITICAL ruby WORKING POC
Cisco Data Center Network Manager < 11.3(1) - Unauthenticated Remote Code Execution via Authentication Bypass
Multiple vulnerabilities in the authentication mechanisms of Cisco Data Center Network Manager (DCNM) could allow an unauthenticated, remote attacker to bypass authentication and execute arbitrary actions with administrative privileges on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
CVSS 9.8
CVE-2021-27850 METASPLOIT CRITICAL ruby WORKING POC
Apache Tapestry 5.4.0-5.6.2 and 5.7.0 - Unauthenticated Remote Code Execution via Asset File URL Blacklist Bypass
A critical unauthenticated remote code execution vulnerability was found all recent versions of Apache Tapestry. The affected versions include 5.4.5, 5.5.0, 5.6.2 and 5.7.0. The vulnerability I have found is a bypass of the fix for CVE-2019-0195. Recap: Before the fix of CVE-2019-0195 it was possible to download arbitrary class files from the classpath by providing a crafted asset file URL. An attacker was able to download the file `AppModule.class` by requesting the URL `http://localhost:8080/assets/something/services/AppModule.class` which contains a HMAC secret key. The fix for that bug was a blacklist filter that checks if the URL ends with `.class`, `.properties` or `.xml`. Bypass: Unfortunately, the blacklist solution can simply be bypassed by appending a `/` at the end of the URL: `http://localhost:8080/assets/something/services/AppModule.class/` The slash is stripped after the blacklist check and the file `AppModule.class` is loaded into the response. This class usually contains the HMAC secret key which is used to sign serialized Java objects. With the knowledge of that key an attacker can sign a Java gadget chain that leads to RCE (e.g. CommonsBeanUtils1 from ysoserial). Solution for this vulnerability: * For Apache Tapestry 5.4.0 to 5.6.1, upgrade to 5.6.2 or later. * For Apache Tapestry 5.7.0, upgrade to 5.7.1 or later.
CVSS 9.8
CVE-2021-24155 METASPLOIT HIGH ruby WORKING POC
Backup Guard < 1.6.0 - Authenticated Arbitrary File Upload via SGBP Import
The WordPress Backup and Migrate Plugin – Backup Guard WordPress plugin before 1.6.0 did not ensure that the imported files are of the SGBP format and extension, allowing high privilege users (admin+) to upload arbitrary files, including PHP ones, leading to RCE.
CVSS 7.2
CVE-2021-24145 METASPLOIT HIGH ruby WORKING POC
Modern Events Calendar Lite < 5.16.5 - Arbitrary File Upload via CSV Import
Arbitrary file upload in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not properly check the imported file, allowing PHP ones to be uploaded by administrator by using the 'text/csv' content-type in the request.
CVSS 7.2
CVE-2021-24347 METASPLOIT HIGH ruby WORKING POC
SP Project & Document Manager <4.22 - Path Traversal
The SP Project & Document Manager WordPress plugin before 4.22 allows users to upload files, however, the plugin attempts to prevent php and other similar files that could be executed on the server from being uploaded by checking the file extension. It was discovered that php files could still be uploaded by changing the file extension's case, for example, from "php" to "pHP".
CVSS 8.8
CVE-2025-34079 METASPLOIT HIGH ruby WORKING POC
NSClient++ <0.5.2.35 - Authenticated RCE
An authenticated remote code execution vulnerability exists in NSClient++ version 0.5.2.35 when the web interface and ExternalScripts module are enabled. A remote attacker with the administrator password can authenticate to the web interface (default port 8443), inject arbitrary commands as external scripts via the /settings/query.json API, save the configuration, and trigger the script via the /query/{name} endpoint. The injected commands are executed with SYSTEM privileges, enabling full remote compromise. This capability is an intended feature, but the lack of safeguards or privilege separation makes it risky when exposed to untrusted actors.
CVSS 7.8
CVE-2025-34078 METASPLOIT HIGH ruby WORKING POC
NSClient++ <0.5.2.35 - Privilege Escalation
A local privilege escalation vulnerability exists in NSClient++ 0.5.2.35 when both the web interface and ExternalScripts features are enabled. The configuration file (nsclient.ini) stores the administrative password in plaintext and is readable by local users. By extracting this password, an attacker can authenticate to the NSClient++ web interface (typically accessible on port 8443) and abuse the ExternalScripts plugin to inject and execute arbitrary commands as SYSTEM by registering a custom script, saving the configuration, and triggering it via the API. This behavior is documented but insecure, as the plaintext credential exposure undermines access isolation between local users and administrative functions.
CVSS 7.8
CVE-2022-44384 METASPLOIT HIGH ruby WORKING POC
rconfig 3.9.6 - Arbitrary File Upload and Remote Code Execution via PHP File
An arbitrary file upload vulnerability in rconfig v3.9.6 allows attackers to execute arbitrary code via a crafted PHP file.
CVSS 8.8