CVE-2026-82215

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreHIGH confidence

Score 5.9 from GitHub Security Advisory published 2026-09-11. a secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.9Exploit: None knownExposed: 0

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

The Payment Gateway PayPay for WooCommerce WordPress plugin from 0.5 to 0.9.3 does not verify the authenticity of the payment notifications it receives before acting on them, allowing unauthenticated attackers who know the store's merchant identifier to mark arbitrary orders as paid, or to cancel or fail them.

CVSS v3
5.9
EG Score
5.9(high)
EG Risk
27(Track)
EG Risk 27/100SSVC: 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
Severity59% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

September 11, 2026

Last Modified

September 11, 2026

Advisory Details (1)

Auto-updated Sep 11, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

WC PayPay Gateway 0.5 – 0.9.3 – Unauthenticated Payment Bypass via Unverified Webhook | CVE 2026-82215 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/c7703a51-9d5d-4483-b214-7249701ee9ff/

Vendor Advisories for CVE-2026-82215(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 26× 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. 2026-09-19 19:18 UTCGHSA enrichment
  2. 2026-09-18 19:31 UTCEG score recompute
  3. 2026-09-18 19:31 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-17 19:43 UTCEG score recompute
  6. 2026-09-17 19:43 UTCGHSA enrichment
  7. 2026-09-16 18:07 UTCEG score recompute
  8. 2026-09-16 18:07 UTCGHSA enrichment
  9. 2026-09-16 14:08 UTCEPSS rescore
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-15 17:01 UTCEG score recompute
  12. 2026-09-15 17:01 UTCGHSA enrichment
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-14 17:14 UTCGHSA enrichment
  16. 2026-09-13 17:27 UTCEG score recompute
  17. 2026-09-13 17:27 UTCGHSA enrichment
  18. 2026-09-12 17:40 UTCEG score recompute
  19. 2026-09-12 17:40 UTCGHSA enrichment
  20. 2026-09-11 17:53 UTCGHSA enrichment
  21. 2026-09-11 13:23 UTCEG score recompute
  22. 2026-09-11 13:23 UTCGHSA enrichment
  23. 2026-09-11 12:20 UTCEG score recompute
  24. 2026-09-11 11:26 UTCEG score recompute
  25. 2026-09-11 11:00 UTCEG score recompute
Show 1 more
  1. 2026-09-11 10:59 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-82215?
CVE-2026-82215 is a medium vulnerability published on September 11, 2026. The Payment Gateway PayPay for WooCommerce WordPress plugin from 0.5 to 0.9.3 does not verify the authenticity of the payment notifications it receives before acting on them, allowing unauthenticated attackers who know the store's merchant identifier to mark arbitrary orders as paid, or to cancel…
When was CVE-2026-82215 disclosed?
CVE-2026-82215 was first published in the National Vulnerability Database on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82215 actively exploited?
CVE-2026-82215 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.3% of all scored CVEs.
What is the CVSS score of CVE-2026-82215?
CVE-2026-82215 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2026-82215?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82215, 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

Explore the affected products and dependency analysis for CVE-2026-82215

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