What’s Vulnerable › Vulnerabilities

CVE-2023-0340: Custom Content Shortcode <= 4.0.2 - Contributor+ LFI

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-03-20 · updated 2026-06-17

Description

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.

Affected products

• Custom Content Shortcode: through 4.0.2

References

• https://wpscan.com/vulnerability/71956598-90aa-4557-947a-c4716674543d
• https://wpscan.com/vulnerability/71956598-90aa-4557-947a-c4716674543d

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