Vulnerability in Custom Content Shortcode Project
CVE-2023-0340
The Custom Content Shortcode WordPress plugin through 4.0.2 does not validate one of its shortcode attribute, which could allow users with a contributor role and above to include arbitrary files via a traversal attack. This could also allow them to read non PHP files and retrieve their content. RCE could also be achieved if the attacker manage to upload a malicious image containing PHP code, and then include it via the affected attribute, on a default WP install, authors could easily achieve that given that they have the upload_file capability.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (62.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Custom Content Shortcode Project
- Custom Content Shortcode — versions 0
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/71956598-90aa-4557-947a-c4716674543d (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2023-0340?
- CVE-2023-0340 is a high-severity vulnerability in Custom Content Shortcode Project, classified under CWE-22 IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY ('PATH TRAVERSAL'). CVSS score: 8.8/10. Published 2023-03-20.
- How severe is CVE-2023-0340?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2023-0340 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.