CVE-2022-4047

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-12-26. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 6%CVSS: 9.8Exploit: NoneExposed: 0

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

The Return Refund and Exchange For WooCommerce WordPress plugin before 4.0.9 does not validate attachment files to be uploaded via an AJAX action available to unauthenticated users, which could allow them to upload arbitrary files such as PHP and lead to RCE

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

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%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
92.7%
KEV
Not listed

Published

December 26, 2022

Last Modified

April 14, 2025

Advisory Details (1)

Auto-updated May 26, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Return Refund and Exchange For WooCommerce < 4.0.9 – Unauthenticated Arbitrary File Upload | CVE 2022-4047 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/8965a87c-5fe5-4b39-88f3-e00966ca1d94

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 46× 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. 2026-07-24 14:15 UTCEPSS rescore
  2. 2026-07-23 14:16 UTCEPSS rescore
  3. 2026-07-23 14:16 UTCEPSS rescore
  4. 2026-07-23 02:13 UTCEG score recompute
  5. 2026-07-22 23:01 UTCEG score recompute
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  1. 2026-07-12 05:44 UTCEPSS rescore
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  22. 2026-06-24 14:03 UTCEPSS rescore
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  40. 2026-06-13 22:59 UTCEPSS rescore
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  43. 2026-06-11 13:58 UTCEPSS rescore
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  45. 2026-06-10 13:21 UTCEPSS rescore
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  47. 2026-06-08 14:15 UTCEPSS rescore
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  49. 2026-06-07 15:23 UTCEPSS rescore
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  51. 2026-06-05 22:46 UTCEPSS rescore
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  62. 2026-05-26 07:17 UTCEPSS rescore
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  64. 2026-05-26 07:17 UTCEPSS rescore
  65. 2026-05-25 09:45 UTCEG score recompute
  66. 2026-05-25 09:45 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2022-4047?
CVE-2022-4047 is a critical vulnerability published on December 26, 2022. The Return Refund and Exchange For WooCommerce WordPress plugin before 4.0.9 does not validate attachment files to be uploaded via an AJAX action available to unauthenticated users, which could allow them to upload arbitrary files such as PHP and lead to RCE
When was CVE-2022-4047 disclosed?
CVE-2022-4047 was first published in the National Vulnerability Database on December 26, 2022, with the most recent update on April 14, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-4047 actively exploited?
CVE-2022-4047 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 92.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-4047?
CVE-2022-4047 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-4047?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-4047, 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.

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