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CVE-2024-58349 – Unauthenticated Arbitrary File Upload Leading to RCE – WordPress Travelscape The…

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Summary

CVE-2024-58349 is a critical arbitrary file upload vulnerability (CWE-434) in the WordPress Travelscape theme v1.0.3, developed by WP Travel Kit. The flaw stems from insufficient validation in the theme’s file upload functionality, allowing unauthenticated remote attackers to upload malicious files — such as PHP webshells — directly to the theme directory and execute them, resulting in full Remote Code Execution (RCE) on the affected WordPress installation. The vulnerability carries a CVSS v3.1 score of 9.8 (Critical) and a CVSS v4.0 score of 9.3 (Critical).

Technical details

  • Root cause: The theme exposes a file upload endpoint (/wp-content/themes/travelscape/json.php) that performs insufficient validation of uploaded file types, failing to restrict dangerous file extensions such as .php.
  • Trigger conditions: No authentication, user interaction, or special configuration is required. The endpoint is reachable over the network on any standard WordPress installation running the affected theme.
  • Attack vector: A remote, unauthenticated attacker sends a crafted HTTP request to the vulnerable upload endpoint, uploading a malicious PHP file (e.g., a webshell) to the theme directory.
  • Impact: Once uploaded, the attacker can directly execute the malicious file via an HTTP request, achieving full Remote Code Execution with the privileges of the web server process — enabling complete compromise of the WordPress installation, including full confidentiality, integrity, and availability impact.
  • Public PoC: A working exploit (EDB-ID:51969, authored by Milad Karimi) has been publicly available on Exploit-DB since April 2024, significantly lowering the barrier to exploitation.

Affected software

  • WordPress Travelscape Theme by WP Travel Kit — versions up to and including 1.0.3

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical)
    Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVSS v4.0 Base Score: 9.3 (Critical)
    Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Mitigation and recommended actions

  • Immediate action: No official patched version has been confirmed by the vendor at this time. Site administrators running the Travelscape theme v1.0.3 should contact WP Travel Kit for an updated version and monitor the official theme repository for a security release.
  • If no patch is available:
    • Remove or disable the Travelscape theme on any internet-facing WordPress installation until a patch is released.
    • Apply server-level controls to block external access to /wp-content/themes/travelscape/json.php (e.g., via .htaccess rules or WAF policies).
    • Implement a Web Application Firewall (WAF) rule to block unauthenticated POST requests to the vulnerable endpoint.
    • Audit the web server’s upload directory for any unrecognized or unexpected PHP files.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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