Description
The Express Entries Dashboard in Concrete5 8.5.4 allows stored XSS via the name field of a new data object at an index.php/dashboard/express/entries/view/ URI.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Concrete5 8.5.4 - 'name' Stored XSS EDB-49721 · webapps · Mar 29, 2021
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- https://documentation.concrete5.org/developers/introduction/version-history
- https://github.com/Quadron-Research-Lab/CVE/blob/main/CVE-2021-3111.pdf
- http://packetstormsecurity.com/files/161600/Concrete5-8.5.4-Cross-Site-Scripting.html
- https://documentation.concrete5.org/developers/introduction/version-history/855-release-notes
- http://packetstormsecurity.com/files/161997/Concrete5-8.5.4-Cross-Site-Scripting.html