What’s Vulnerable › Vulnerabilities

CVE-2024-8856: Backup and Staging by WP Time Capsule <= 1.22.21 - Unauthenticated Arbitrary File Upload

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 94.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-11-16 · updated 2026-06-17
• Weakness: CWE-434

Description

The Backup and Staging by WP Time Capsule plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the the UploadHandler.php file and no direct file access prevention in all versions up to, and including, 1.22.21. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Affected products

• revmakx Backup and Staging by WP Time Capsule: before 1.22.22 — fixed in 1.22.22

How to fix

Upgrade to a fixed version: revmakx Backup and Staging by WP Time Capsule 1.22.22. Check the vendor advisory for mitigations.

References

• https://hacked.be/posts/CVE-2024-8856
• https://plugins.trac.wordpress.org/browser/wp-time-capsule/trunk/wp-tcapsule-bridge/upload/php/UploadHandler.php
• https://plugins.trac.wordpress.org/changeset/3188325/
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3153289%40wp-time-capsule&new=3153289%40wp-time-capsule&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/fdc2de78-5601-461f-b2f0-c80b592ccb1b?source=cve

Get alerted when CVE-2024-8856 or the next vulnerability affects your stack