CVE-2026-16734

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-06. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

The Stripe Payment Forms by WP Full Pay WordPress plugin before 8.5.2 does not verify that the caller owns the Stripe payment intent referenced by two unauthenticated payment-form AJAX actions, allowing an unauthenticated visitor — using a nonce that is embedded in every public page containing a payment form — to change the amount of a payment intent that the Stripe Payment Forms by WP Full Pay WordPress plugin before 8.5.2 then updates server-side through the Stripe API with the store's secret key. An ownership check added in 8.5.0 was applied to only one payment-intent handler, leaving the pricing-recalculation and payment-intent-update actions unprotected against amount manipulation.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: 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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 6, 2026

Advisory Details (1)

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

Stripe Payment Forms by WP Full Pay < 8.5.2 – Unauthenticated Payment Intent Amount Manipulation | CVE 2026-16734 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/5fcb5b11-3ebd-4821-aa6f-c6be70bac395/

Vendor Advisories for CVE-2026-16734(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 27× in last 7d / 63× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 22:35 UTCGHSA enrichment
  3. 2026-08-20 10:45 UTCGHSA enrichment
  4. 2026-08-19 22:56 UTCEG score recompute
  5. 2026-08-19 22:56 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 11:06 UTCGHSA enrichment
  8. 2026-08-18 23:16 UTCEG score recompute
  9. 2026-08-18 23:15 UTCGHSA enrichment
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-18 11:24 UTCGHSA enrichment
  12. 2026-08-17 23:34 UTCEG score recompute
  13. 2026-08-17 23:34 UTCGHSA enrichment
  14. 2026-08-17 13:47 UTCEPSS rescore
  15. 2026-08-17 11:44 UTCGHSA enrichment
  16. 2026-08-16 23:50 UTCEG score recompute
  17. 2026-08-16 23:50 UTCGHSA enrichment
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 12:00 UTCEG score recompute
  20. 2026-08-16 12:00 UTCGHSA enrichment
  21. 2026-08-16 02:14 UTCEPSS rescore
  22. 2026-08-16 00:11 UTCGHSA enrichment
  23. 2026-08-15 12:21 UTCEG score recompute
  24. 2026-08-15 12:21 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
Show 38 more
  1. 2026-08-15 00:31 UTCGHSA enrichment
  2. 2026-08-14 12:42 UTCGHSA enrichment
  3. 2026-08-14 00:52 UTCEG score recompute
  4. 2026-08-14 00:52 UTCGHSA enrichment
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-13 13:02 UTCGHSA enrichment
  7. 2026-08-13 01:12 UTCEG score recompute
  8. 2026-08-13 01:12 UTCGHSA enrichment
  9. 2026-08-12 13:50 UTCEPSS rescore
  10. 2026-08-12 13:23 UTCGHSA enrichment
  11. 2026-08-12 01:33 UTCGHSA enrichment
  12. 2026-08-11 13:44 UTCEG score recompute
  13. 2026-08-11 13:44 UTCGHSA enrichment
  14. 2026-08-11 13:42 UTCEPSS rescore
  15. 2026-08-11 01:54 UTCEG score recompute
  16. 2026-08-11 01:54 UTCGHSA enrichment
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 14:05 UTCGHSA enrichment
  19. 2026-08-10 02:16 UTCGHSA enrichment
  20. 2026-08-09 14:26 UTCEG score recompute
  21. 2026-08-09 14:26 UTCGHSA enrichment
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-09 02:37 UTCGHSA enrichment
  24. 2026-08-08 14:48 UTCGHSA enrichment
  25. 2026-08-08 02:58 UTCEG score recompute
  26. 2026-08-08 02:58 UTCGHSA enrichment
  27. 2026-08-07 15:08 UTCGHSA enrichment
  28. 2026-08-07 03:18 UTCEG score recompute
  29. 2026-08-07 03:18 UTCGHSA enrichment
  30. 2026-08-06 15:29 UTCEG score recompute
  31. 2026-08-06 15:29 UTCGHSA enrichment
  32. 2026-08-06 14:44 UTCEG score recompute▲ 7.50
  33. 2026-08-06 14:44 UTCGHSA enrichment
  34. 2026-08-06 14:41 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  35. 2026-08-06 13:46 UTCEPSS rescore
  36. 2026-08-06 07:17 UTCNVD update
  37. 2026-08-06 06:25 UTCEG score recompute
  38. 2026-08-06 06:25 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-16734?
CVE-2026-16734 is a high vulnerability published on August 6, 2026. The Stripe Payment Forms by WP Full Pay WordPress plugin before 8.5.2 does not verify that the caller owns the Stripe payment intent referenced by two unauthenticated payment-form AJAX actions, allowing an unauthenticated visitor — using a nonce that is embedded in every public page containing a…
When was CVE-2026-16734 disclosed?
CVE-2026-16734 was first published in the National Vulnerability Database on August 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16734 actively exploited?
CVE-2026-16734 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 89.6% of all scored CVEs.
What is the CVSS score of CVE-2026-16734?
CVE-2026-16734 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-16734?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16734, 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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