CVE-2023-28121

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-04-12. 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 87%
  • Public exploit code is available (Metasploit, epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 87%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.

An issue in WooCommerce Payments plugin for WordPress (versions 5.6.1 and lower) allows an unauthenticated attacker to send requests on behalf of an elevated user, like administrator. This allows a remote, unauthenticated attacker to gain admin access on a site that has the affected version of the plugin activated.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
83(Track*)
EG Risk 83/100SSVC: 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%
Exploitation87% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
87%
EPSS %ILE
100%
KEV
Not listed

Published

April 12, 2023

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Jul 29, 2026
No patch confirmed yet.
generic

Patch Diffing CVE-2023-28121 to Compromise a … | RCE Security

https://www.rcesecurity.com/2023/07/patch-diffing-cve-2023-28121-to-compromise-a-woocommerce/
generic

Critical Vulnerability Patched in WooCommerce Payments – What You Need to Know (Sept 2023 Update) – The WooCommerce Developer Blog

https://developer.woocommerce.com/2023/03/23/critical-vulnerability-detected-in-woocommerce-payments-what-you-need-to-know/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 1× in last 7d / 15× 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 02:20 UTCEG score recompute
  3. 2026-07-22 23:08 UTCEG score recompute
  4. 2026-07-22 14:06 UTCEPSS rescore
  5. 2026-07-22 14:06 UTCEPSS rescore
  6. 2026-07-21 15:23 UTCEPSS rescore
  7. 2026-07-19 02:27 UTCEPSS rescore
  8. 2026-07-19 02:27 UTCEPSS rescore
  9. 2026-07-15 16:56 UTCEPSS rescore
  10. 2026-07-15 16:56 UTCEPSS rescore
  11. 2026-07-13 06:11 UTCEPSS rescore
  12. 2026-07-13 06:11 UTCEPSS rescore
  13. 2026-07-12 05:45 UTCEPSS rescore
  14. 2026-07-04 06:29 UTCEPSS rescore
  15. 2026-07-01 15:04 UTCEPSS rescore
  16. 2026-06-27 03:07 UTCEPSS rescore
  17. 2026-06-24 14:03 UTCEPSS rescore
  18. 2026-06-24 14:03 UTCEPSS rescore
  19. 2026-06-23 21:31 UTCEPSS rescore
  20. 2026-06-23 21:31 UTCEPSS rescore
  21. 2026-06-21 01:58 UTCEPSS rescore
  22. 2026-06-21 01:58 UTCEPSS rescore
  23. 2026-06-17 17:51 UTCEPSS rescore
  24. 2026-06-17 17:51 UTCEPSS rescore
  25. 2026-06-15 17:47 UTCEPSS rescore
Show 14 more
  1. 2026-06-14 23:16 UTCEPSS rescore
  2. 2026-06-10 22:17 UTCEPSS rescore
  3. 2026-06-08 14:15 UTCEPSS rescore
  4. 2026-06-08 14:15 UTCEPSS rescore
  5. 2026-06-04 13:11 UTCEPSS rescore
  6. 2026-06-04 13:11 UTCEPSS rescore
  7. 2026-05-28 13:43 UTCEPSS rescore
  8. 2026-05-28 13:43 UTCEPSS rescore
  9. 2026-05-27 13:39 UTCEPSS rescore
  10. 2026-05-27 13:39 UTCEPSS rescore
  11. 2026-05-26 13:43 UTCEPSS rescore
  12. 2026-05-26 13:43 UTCEPSS rescore
  13. 2026-05-25 03:10 UTCEG score recompute
  14. 2026-05-25 03:10 UTCGHSA enrichment

Publicly available exploits

(4 references)

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

  • GitHub PoCim-hanzou/Mass-CVE-2023-28121
    First seen Jul 12, 2023

    CVE-2023-28121 - WooCommerce Payments < 5.6.2 - Unauthenticated Privilege Escalation [ Mass Add Admin User ]

    Open source ↗
  • GitHub PoCgbrsh/CVE-2023-28121
    First seen Mar 30, 2023

    WooCommerce Payments: Unauthorized Admin Access Exploit

    Open source ↗
  • Metasploitauxiliary/scanner/http/wp_woocommerce_payments_add_user✓ verified
    First seen Mar 22, 2023

    Wordpress Plugin WooCommerce Payments Unauthenticated Admin Creation

    Open source ↗
  • Nucleihttp/cves/2023/CVE-2023-28121.yaml
    First seen Jan 1, 2023

    WooCommerce Payments - Unauthorized Admin Access

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-28121?
CVE-2023-28121 is a critical vulnerability published on April 12, 2023. An issue in WooCommerce Payments plugin for WordPress (versions 5.6.1 and lower) allows an unauthenticated attacker to send requests on behalf of an elevated user, like administrator. This allows a remote, unauthenticated attacker to gain admin access on a site that has the affected version of the…
When was CVE-2023-28121 disclosed?
CVE-2023-28121 was first published in the National Vulnerability Database on April 12, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-28121 actively exploited?
CVE-2023-28121 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 87% probability of exploitation in the next 30 days, which ranks it in the top 0.3% of all scored CVEs.
What is the CVSS score of CVE-2023-28121?
CVE-2023-28121 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-28121?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-28121, 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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