W (vincent-peugnet/wcms) through 3.18.0 contains a remote code execution vulnerability that allows authenticated editors to write arbitrary files by abusing the unvalidated path in POST /api/v0/media/upload/[*:path]. Attackers can upload .php files executed by the web server, use encoded ../ sequences to write outside the media directory, and delete arbitrary files via DELETE /api/v0/media/[*:path].
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Wcms Wcms
cpe:2.3:a:wcms:wcms:*:*:*:*:*:*:*:*
|
— |
<= 3.18.0
|
References 5
https://github.com/vincent-peugnet/wcms
disclosure@vulncheck.com
https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f…
disclosure@vulncheck.com
https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f…
disclosure@vulncheck.com
https://github.com/vincent-peugnet/wcms/issues/662
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/w-wcms-through-3.18.0-rce-and-arbitrary-fi…
disclosure@vulncheck.com