CVE-2024-8856

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2024-11-16. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 94%
  • Public exploit code is available (Metasploit, epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 94%CVSS: 9.8Exploit: Metasploit · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
97(Track)
EG Risk 97/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation94% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
94%
EPSS %ILE
100%
KEV
Not listed

Published

November 16, 2024

Last Modified

July 9, 2025

Advisory Details (1)

Auto-updated Jun 22, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

CVE-2024-8856 - Unauthenticated RCE via Arbitrary File Upload

https://hacked.be/posts/CVE-2024-8856

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 13× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-26 14:53 UTCEPSS rescore
  2. 2026-07-25 14:17 UTCEPSS rescore
  3. 2026-07-25 14:17 UTCEPSS rescore
  4. 2026-07-23 02:46 UTCEG score recompute
  5. 2026-07-22 14:07 UTCEPSS rescore
  6. 2026-07-22 14:07 UTCEPSS rescore
  7. 2026-07-20 17:07 UTCEPSS rescore
  8. 2026-07-19 14:30 UTCEPSS rescore
  9. 2026-07-15 16:57 UTCEPSS rescore
  10. 2026-07-15 16:57 UTCEPSS rescore
  11. 2026-07-12 05:45 UTCEPSS rescore
  12. 2026-07-12 05:45 UTCEPSS rescore
  13. 2026-07-11 08:26 UTCEPSS rescore
  14. 2026-06-27 03:08 UTCEPSS rescore
  15. 2026-06-25 13:49 UTCEPSS rescore
  16. 2026-06-25 13:49 UTCEPSS rescore
  17. 2026-06-24 14:04 UTCEPSS rescore
  18. 2026-06-23 21:32 UTCEPSS rescore
  19. 2026-06-23 21:32 UTCEPSS rescore
  20. 2026-06-22 14:25 UTCEPSS rescore
  21. 2026-06-22 14:25 UTCEPSS rescore
  22. 2026-06-19 19:25 UTCEPSS rescore
  23. 2026-06-19 19:25 UTCEPSS rescore
  24. 2026-06-15 17:48 UTCEPSS rescore
  25. 2026-06-15 17:48 UTCEPSS rescore
Show 16 more
  1. 2026-06-14 23:17 UTCEPSS rescore
  2. 2026-06-12 23:11 UTCEPSS rescore
  3. 2026-06-12 23:11 UTCEPSS rescore
  4. 2026-06-06 13:47 UTCEPSS rescore
  5. 2026-06-06 13:46 UTCEPSS rescore
  6. 2026-06-02 20:12 UTCEPSS rescore
  7. 2026-06-02 20:12 UTCEPSS rescore
  8. 2026-05-27 13:40 UTCEPSS rescore
  9. 2026-05-27 13:40 UTCEPSS rescore
  10. 2026-05-27 13:40 UTCEPSS rescore
  11. 2026-05-26 07:18 UTCEPSS rescore
  12. 2026-05-26 07:18 UTCEPSS rescore
  13. 2026-05-26 07:18 UTCEPSS rescore
  14. 2026-05-26 07:18 UTCEPSS rescore
  15. 2026-05-23 18:04 UTCEG score recompute
  16. 2026-05-23 18:04 UTCGHSA enrichment

Publicly available exploits

(5 references)

Working exploit code is in the public domain (1 Metasploit module) (2 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-52131
    First seen Apr 6, 2025

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

    Open source ↗
  • GitHub PoCJenderal92/CVE-2024-8856
    First seen Nov 21, 2024

    This tool scans WordPress websites for vulnerabilities in the WP Time Capsule plugin related to CVE-2024-8856. It identifies plugin versions below 1.22.22 as vulnerable and logs results to vuln.txt. Simple and efficient, it helps security researchers and admins detect and address risks quickly.

    Open source ↗
  • GitHub PoCubaydev/CVE-2024-8856
    First seen Nov 16, 2024

    WordPress WP Time Capsule Plugin Arbitrary File Upload Vulnerability

    Open source ↗
  • Metasploitexploit/multi/http/wp_time_capsule_file_upload_rce✓ verified
    First seen Nov 15, 2024

    WordPress WP Time Capsule Arbitrary File Upload to RCE

    Open source ↗
  • Nucleihttp/cves/2024/CVE-2024-8856.yaml
    First seen Jan 1, 2024

    WP Time Capsule Plugin - Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2024-8856?
CVE-2024-8856 is a critical vulnerability published on November 16, 2024. 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…
When was CVE-2024-8856 disclosed?
CVE-2024-8856 was first published in the National Vulnerability Database on November 16, 2024, with the most recent update on July 9, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-8856 actively exploited?
CVE-2024-8856 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94% probability of exploitation in the next 30 days, which ranks it in the top 0.2% of all scored CVEs.
What is the CVSS score of CVE-2024-8856?
CVE-2024-8856 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2024-8856?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-8856, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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