CVE-2026-81424

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-05. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

The Accept Stripe Payments WordPress plugin before 2.1.4 does not verify that the product fulfilled when a checkout is completed matches the product the authoritative payment was actually made for, checking only that the amount paid is at least the referenced product's price, allowing unauthenticated attackers who complete a genuine payment to obtain fulfilment for a different, equal- or lower-priced product than the one they paid for.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 5, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Sep 6, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Accept Stripe Payments < 2.1.4 – Unauthenticated Product Substitution via IDOR | CVE 2026-81424 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/64c20ce4-d94d-4f09-8d95-9ba232066f62/

Vendor Advisories for CVE-2026-81424(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 22× in last 7d / 48× 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. 2026-09-21 01:31 UTCEG score recompute
  2. 2026-09-21 01:31 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 03:01 UTCEG score recompute
  5. 2026-09-20 03:01 UTCGHSA enrichment
  6. 2026-09-19 04:32 UTCEG score recompute
  7. 2026-09-19 04:32 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-18 06:01 UTCEG score recompute
  10. 2026-09-18 06:01 UTCGHSA enrichment
  11. 2026-09-17 07:31 UTCEG score recompute
  12. 2026-09-17 07:31 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 09:00 UTCEG score recompute
  15. 2026-09-16 09:00 UTCGHSA enrichment
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-15 09:24 UTCEG score recompute
  18. 2026-09-15 09:24 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 10:54 UTCEG score recompute
  22. 2026-09-14 10:54 UTCGHSA enrichment
  23. 2026-09-13 12:25 UTCEG score recompute
  24. 2026-09-13 12:25 UTCGHSA enrichment
  25. 2026-09-12 13:55 UTCGHSA enrichment
Show 23 more
  1. 2026-09-11 15:25 UTCEG score recompute
  2. 2026-09-11 15:25 UTCGHSA enrichment
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-10 16:55 UTCEG score recompute
  6. 2026-09-10 16:55 UTCGHSA enrichment
  7. 2026-09-09 18:25 UTCEG score recompute
  8. 2026-09-09 18:25 UTCGHSA enrichment
  9. 2026-09-08 22:01 UTCEPSS rescore
  10. 2026-09-08 19:55 UTCGHSA enrichment
  11. 2026-09-08 08:27 UTCEG score recompute
  12. 2026-09-08 08:27 UTCGHSA enrichment
  13. 2026-09-07 09:57 UTCEG score recompute
  14. 2026-09-07 09:57 UTCGHSA enrichment
  15. 2026-09-06 13:48 UTCEPSS rescore
  16. 2026-09-06 11:23 UTCGHSA enrichment
  17. 2026-09-06 10:45 UTCEG score recompute▲ 5.30
  18. 2026-09-06 10:45 UTCGHSA enrichment
  19. 2026-09-06 10:44 UTCMITRE cvelistV5CVSS v3 → 5.3 · severity → MEDIUM
  20. 2026-09-05 15:31 UTCEPSS rescore
  21. 2026-09-05 07:23 UTCNVD update
  22. 2026-09-05 06:36 UTCEG score recompute
  23. 2026-09-05 06:33 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81424?
CVE-2026-81424 is a medium vulnerability published on September 5, 2026. The Accept Stripe Payments WordPress plugin before 2.1.4 does not verify that the product fulfilled when a checkout is completed matches the product the authoritative payment was actually made for, checking only that the amount paid is at least the referenced product's price, allowing…
When was CVE-2026-81424 disclosed?
CVE-2026-81424 was first published in the National Vulnerability Database on September 5, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81424 actively exploited?
CVE-2026-81424 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 87.1% of all scored CVEs.
What is the CVSS score of CVE-2026-81424?
CVE-2026-81424 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-81424?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81424, 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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