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CVE-2024-8856

93
FAUCET Score

CVE-2024-8856 is a critical arbitrary file upload vulnerability in the Backup and Staging by WP Time Capsule WordPress plugin, affecting all versions up to and including 1.22.21. This flaw, due to missing file type validation, allows unauthenticated attackers to upload malicious files, potentially leading to remote code execution. With a CVSS score of 9.8 (CRITICAL) and an EPSS score of 0.9295, it presents a significant risk, as it can be exploited remotely with low complexity and no user interaction. While not yet in CISA's KEV catalog, public exploit modules for Metasploit and Nuclei, along with an ExploitDB entry, confirm readily available exploit code, though community discussion and media coverage are currently low.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.22.22CPE matchmatch criteria
cpe:2.3:a:revmakx:backup_and_staging_by_wp_time_capsule:*:*:*:*:*:wordpress:*:*
>= 0, <= 1.22.21CPE match
cpe:2.3:a:revmakx:backup_and_staging_by_wp_time_capsule:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
93.71%
Probability of exploitation in next 30 days
EPSS Percentile
99.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: WordPress WP Time Capsule Arbitrary File Upload to RCE · Nov 15, 2024
Nuclei: CVE-2024-8856 · Dec 11, 2024
ExploitDB: EDB-52131 · Apr 6, 2025
This CVE's current EPSS score of 0.9371 is in the 99th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

hacked.be / posts/CVE-2024-8856
Product
plugins.trac.wordpress.org / browser/wp-time-capsule/trunk/wp-tcapsule-bridge/upload/php/UploadHandler.php
Product
plugins.trac.wordpress.org / changeset/3188325
Patch
plugins.trac.wordpress.org / changeset
Patch
wordfence.com / threat-intel/vulnerabilities/id/fdc2de78-5601-461f-b2f0-c80b592ccb1b
Third Party Advisory