How severe is CVE-2024-8856?

CVE-2024-8856 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2024-8856?

Affected package information for CVE-2024-8856 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2024-8856?

No fixed version has been published for CVE-2024-8856 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2024-8856 actively exploited in the wild?

Yes. There are 2 known exploit references for CVE-2024-8856, including 1 documented proof-of-concept exploit on Exploit-DB and 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2024-8856?

CVE-2024-8856 has an EPSS (Exploit Prediction Scoring System) score of 93.1%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is CVE-2024-8856?

CVE-2024-8856 is classified as Unrestricted File Upload (CWE-434). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2024-8856?

CVE-2024-8856 affects revmakx backup and staging by wp time capsule. Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2024-8856?

A Nuclei detection template exists for CVE-2024-8856, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2024-8856 published, and has it been updated?

CVE-2024-8856 was published on November 16, 2024 and was last updated on July 9, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2024-8856

CRITICAL

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…

Published

Nov 16, 2024

Updated

Jul 9, 2025

Affected

0 pkgs

Patched

None yet

Exploits

2 known

EPSS Exploitation Probability

via FIRST.org ↗

93.1%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

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

1 product · 1 configurations

Application

backup and staging by wp time capsulerevmakx

< 1.22.22

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-52131webappsphp

Backup and Staging by WP Time Capsule 1.22.21 - Unauthenticated Arbitrary File Upload

by Al Baradi Joy · Apr 6, 2025

Exploit-DB Source

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2024-8856 in your stack?

O3 detects CVE-2024-8856 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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