Crayon Syntax Highlighter <= 2.8.4 - Authenticated (Contributor+) Server Side Request Forgery

Server-Side Request Forgery (SSRF)
CVE CVE-2023-4893
CVSS 6.4 (Medium)
Publicly Published September 11, 2023
Last Updated September 12, 2023
Researcher István Márton - Wordfence


The Crayon Syntax Highlighter plugin for WordPress is vulnerable to Server Side Request Forgery via the 'crayon' shortcode in versions up to, and including, 2.8.4. This can allow authenticated attackers with contributor-level permissions or above to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.



1 affected software package

Software Type Plugin
Software Slug crayon-syntax-highlighter (view on
Patched? No
Remediation No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Affected Version
  • <= 2.8.4

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