Arbitrary file upload in Revmakx Backup And Staging By Wp Time Capsule
CVE-2024-8856
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.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 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.
EPSS exploit prediction
EPSS: 0.941 (99.8th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.940 · newest: 0.941 · change: +0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.wordfence.com/threat-intel/vulnerabilities/id/fdc2de78-5601-461f-b2f0-c80b5… (Third Party Advisory)
- plugins.trac.wordpress.org/browser/wp-time-capsule/trunk/wp-tcapsule-bridge/upl… (Product)
- plugins.trac.wordpress.org/changeset/3188325/ (Patch)
- plugins.trac.wordpress.org/changeset (Patch)
- hacked.be/posts/CVE-2024-8856 (Product)
Frequently asked questions
- What is CVE-2024-8856?
- CVE-2024-8856 is a critical-severity vulnerability in Revmakx Backup And Staging By Wp Time Capsule, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2024-11-16.
- How severe is CVE-2024-8856?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2024-8856 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.