CVE-2026-16739

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2026-08-14. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
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: 0.3%CVSS: 5.9Exploit: None knownExposed services: Not assessed

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

The Epeken All Kurir for Woocommerce WordPress plugin through 2.1.4 does not verify that a payment-confirmation request originates from the owner of the targeted order, nor that any payment actually occurred, allowing unauthenticated attackers to mark arbitrary orders as confirmed and, in a non-default configuration, paid.

CVSS v3
5.9
EG Score
5.9MEDIUMmedium confidence
EG Risk
27
EG Risk 27/100CISA SSVC

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%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
19th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 14, 2026

Last Modified

August 31, 2026

Advisory Details (1)

Auto-updated Aug 14, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Epeken All Kurir <= 2.1.2 – Unauthenticated Order Payment Confirmation Forgery | CVE 2026-16739 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/b66b86f9-e49e-4654-84a1-0f2e5c859289/

Vendor Advisories for CVE-2026-16739(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 15× in last 7d / 69× 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.

Showing the most recent 100 of 140 total refreshes for this CVE.

  1. 2026-10-04 23:21 UTCEPSS rescore
  2. 2026-10-04 22:14 UTCGHSA enrichment
  3. 2026-10-03 19:43 UTCEG score recompute
  4. 2026-10-03 19:43 UTCGHSA enrichment
  5. 2026-10-03 14:25 UTCEPSS rescore
  6. 2026-10-02 07:22 UTCEG score recompute
  7. 2026-10-02 07:22 UTCGHSA enrichment
  8. 2026-10-01 19:49 UTCEPSS rescore
  9. 2026-09-30 21:42 UTCEG score recompute
  10. 2026-09-30 21:42 UTCGHSA enrichment
  11. 2026-09-30 15:02 UTCEPSS rescore
  12. 2026-09-29 15:20 UTCEPSS rescore
  13. 2026-09-29 05:39 UTCEG score recompute
  14. 2026-09-29 05:39 UTCGHSA enrichment
  15. 2026-09-28 13:51 UTCEPSS rescore
  16. 2026-09-28 07:38 UTCEG score recompute
  17. 2026-09-28 07:38 UTCGHSA enrichment
  18. 2026-09-27 13:47 UTCEPSS rescore
  19. 2026-09-27 09:39 UTCEG score recompute
  20. 2026-09-27 09:39 UTCGHSA enrichment
  21. 2026-09-26 15:58 UTCEPSS rescore
  22. 2026-09-25 03:24 UTCEG score recompute
  23. 2026-09-25 03:24 UTCGHSA enrichment
  24. 2026-09-23 20:46 UTCEG score recompute
  25. 2026-09-23 20:46 UTCGHSA enrichment
Show 75 more
  1. 2026-09-22 20:57 UTCEG score recompute
  2. 2026-09-22 20:57 UTCGHSA enrichment
  3. 2026-09-21 19:47 UTCEG score recompute
  4. 2026-09-21 19:47 UTCGHSA enrichment
  5. 2026-09-20 18:47 UTCGHSA enrichment
  6. 2026-09-19 20:08 UTCEG score recompute
  7. 2026-09-19 20:08 UTCGHSA enrichment
  8. 2026-09-18 22:07 UTCEG score recompute
  9. 2026-09-18 22:07 UTCGHSA enrichment
  10. 2026-09-18 19:27 UTCEPSS rescore
  11. 2026-09-17 22:16 UTCEG score recompute
  12. 2026-09-17 22:16 UTCGHSA enrichment
  13. 2026-09-16 23:50 UTCEG score recompute
  14. 2026-09-16 23:50 UTCGHSA enrichment
  15. 2026-09-16 14:07 UTCEPSS rescore
  16. 2026-09-16 05:14 UTCEPSS rescore
  17. 2026-09-15 19:30 UTCEG score recompute
  18. 2026-09-15 19:30 UTCGHSA enrichment
  19. 2026-09-14 20:44 UTCGHSA enrichment
  20. 2026-09-13 19:53 UTCEG score recompute
  21. 2026-09-13 19:53 UTCGHSA enrichment
  22. 2026-09-13 16:46 UTCEPSS rescore
  23. 2026-09-12 21:53 UTCEG score recompute
  24. 2026-09-12 21:53 UTCGHSA enrichment
  25. 2026-09-12 15:00 UTCEPSS rescore
  26. 2026-09-11 23:53 UTCEG score recompute
  27. 2026-09-11 23:53 UTCGHSA enrichment
  28. 2026-09-11 14:52 UTCEPSS rescore
  29. 2026-09-11 09:36 UTCEPSS rescore
  30. 2026-09-11 01:00 UTCEG score recompute
  31. 2026-09-11 01:00 UTCGHSA enrichment
  32. 2026-09-10 09:34 UTCEPSS rescore
  33. 2026-09-10 03:00 UTCGHSA enrichment
  34. 2026-09-09 04:50 UTCEG score recompute
  35. 2026-09-09 04:50 UTCGHSA enrichment
  36. 2026-09-08 22:00 UTCEPSS rescore
  37. 2026-09-07 18:27 UTCEG score recompute
  38. 2026-09-07 18:27 UTCGHSA enrichment
  39. 2026-09-07 16:01 UTCEPSS rescore
  40. 2026-09-06 20:28 UTCEG score recompute
  41. 2026-09-06 20:28 UTCGHSA enrichment
  42. 2026-09-06 13:47 UTCEPSS rescore
  43. 2026-09-05 22:27 UTCEG score recompute
  44. 2026-09-05 22:26 UTCGHSA enrichment
  45. 2026-09-05 00:27 UTCEG score recompute
  46. 2026-09-05 00:27 UTCGHSA enrichment
  47. 2026-09-04 05:06 UTCEPSS rescore
  48. 2026-09-04 01:33 UTCGHSA enrichment
  49. 2026-09-03 03:32 UTCEG score recompute
  50. 2026-09-03 03:32 UTCGHSA enrichment
  51. 2026-09-02 14:11 UTCEPSS rescore
  52. 2026-09-02 05:24 UTCEG score recompute
  53. 2026-09-02 05:24 UTCGHSA enrichment
  54. 2026-09-01 13:53 UTCEPSS rescore
  55. 2026-09-01 07:19 UTCEG score recompute
  56. 2026-09-01 07:19 UTCGHSA enrichment
  57. 2026-09-01 04:39 UTCEPSS rescore
  58. 2026-08-31 09:19 UTCGHSA enrichment
  59. 2026-08-31 07:31 UTCEG score recompute
  60. 2026-08-31 07:30 UTCGHSA enrichment
  61. 2026-08-30 19:17 UTCEPSS rescore
  62. 2026-08-30 09:11 UTCEG score recompute
  63. 2026-08-30 09:11 UTCGHSA enrichment
  64. 2026-08-30 01:22 UTCEPSS rescore
  65. 2026-08-29 11:08 UTCEG score recompute
  66. 2026-08-29 11:07 UTCGHSA enrichment
  67. 2026-08-28 21:41 UTCEPSS rescore
  68. 2026-08-28 13:06 UTCGHSA enrichment
  69. 2026-08-27 14:58 UTCEG score recompute
  70. 2026-08-27 14:58 UTCGHSA enrichment
  71. 2026-08-27 14:25 UTCEPSS rescore
  72. 2026-08-26 16:55 UTCEG score recompute
  73. 2026-08-26 16:55 UTCGHSA enrichment
  74. 2026-08-26 14:46 UTCEPSS rescore
  75. 2026-08-26 14:31 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2026-16739?
CVE-2026-16739 is a medium vulnerability published on August 14, 2026. The Epeken All Kurir for Woocommerce WordPress plugin through 2.1.4 does not verify that a payment-confirmation request originates from the owner of the targeted order, nor that any payment actually occurred, allowing unauthenticated attackers to mark arbitrary orders as confirmed and, in a…
When was CVE-2026-16739 disclosed?
CVE-2026-16739 was first published on August 14, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16739 actively exploited?
CVE-2026-16739 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (19th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-16739?
CVE-2026-16739 has a CVSS v3.1 base score of 5.9 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-16739?
No fix for CVE-2026-16739 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-16739 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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