CVE-2026-8608

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-06-06. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

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

The Event Monster – Event Management, Events Calendar, Tickets plugin for WordPress is vulnerable to Insufficient Verification of Data Authenticity in versions up to, and including, 2.1.0. This is due to the capture_payment() AJAX handler (registered via wp_ajax_nopriv_em_capture_payment) trusting client-supplied payment data — including transaction ID, amount, and payment status — without performing any server-side verification against the PayPal API or any other payment gateway, and without nonce or capability checks. This makes it possible for unauthenticated attackers to forge payment records, mark bookings as Completed, and obtain confirmation emails containing valid QR code tickets without making any actual payment.

CVSS v3
5.3
EG Score
5.3(high)
EPSS
6.0%
KEV
Not listed

Published

June 5, 2026

Last Modified

June 8, 2026

References (5)

Vendor Advisories for CVE-2026-8608(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 / 91× 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. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 21:56 UTCEG score recompute
  6. 2026-07-05 21:56 UTCGHSA enrichment
  7. 2026-07-05 02:31 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 21:51 UTCEG score recompute
  10. 2026-07-04 21:51 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-03 21:36 UTCEG score recompute
  14. 2026-07-03 21:36 UTCGHSA enrichment
  15. 2026-07-02 21:39 UTCEG score recompute
  16. 2026-07-02 21:39 UTCGHSA enrichment
  17. 2026-07-01 21:42 UTCEG score recompute
  18. 2026-07-01 21:42 UTCGHSA enrichment
  19. 2026-07-01 15:07 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 21:38 UTCEG score recompute
  22. 2026-06-30 21:38 UTCGHSA enrichment
  23. 2026-06-29 21:08 UTCEG score recompute
  24. 2026-06-29 21:08 UTCGHSA enrichment
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 70 more
  1. 2026-06-28 21:12 UTCEG score recompute
  2. 2026-06-28 21:12 UTCGHSA enrichment
  3. 2026-06-28 14:07 UTCEPSS rescore
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-27 21:16 UTCEG score recompute
  6. 2026-06-27 21:16 UTCGHSA enrichment
  7. 2026-06-27 03:08 UTCEPSS rescore
  8. 2026-06-26 21:19 UTCEG score recompute
  9. 2026-06-26 21:19 UTCGHSA enrichment
  10. 2026-06-25 21:23 UTCEG score recompute
  11. 2026-06-25 21:23 UTCGHSA enrichment
  12. 2026-06-25 13:50 UTCEPSS rescore
  13. 2026-06-24 21:27 UTCEG score recompute
  14. 2026-06-24 21:27 UTCGHSA enrichment
  15. 2026-06-24 14:05 UTCEPSS rescore
  16. 2026-06-23 21:33 UTCEPSS rescore
  17. 2026-06-23 17:18 UTCEG score recompute
  18. 2026-06-23 17:18 UTCGHSA enrichment
  19. 2026-06-22 14:25 UTCEPSS rescore
  20. 2026-06-22 06:23 UTCEG score recompute
  21. 2026-06-22 06:23 UTCGHSA enrichment
  22. 2026-06-21 14:56 UTCEPSS rescore
  23. 2026-06-21 03:08 UTCEG score recompute
  24. 2026-06-21 03:07 UTCGHSA enrichment
  25. 2026-06-21 01:59 UTCEPSS rescore
  26. 2026-06-19 23:37 UTCEG score recompute
  27. 2026-06-19 23:37 UTCGHSA enrichment
  28. 2026-06-19 19:26 UTCEPSS rescore
  29. 2026-06-18 23:40 UTCEG score recompute
  30. 2026-06-18 23:40 UTCGHSA enrichment
  31. 2026-06-18 17:52 UTCEPSS rescore
  32. 2026-06-17 23:09 UTCEG score recompute
  33. 2026-06-17 23:08 UTCGHSA enrichment
  34. 2026-06-17 17:53 UTCEPSS rescore
  35. 2026-06-16 23:12 UTCEG score recompute
  36. 2026-06-16 23:12 UTCGHSA enrichment
  37. 2026-06-16 17:53 UTCEPSS rescore
  38. 2026-06-15 23:14 UTCEG score recompute
  39. 2026-06-15 23:13 UTCGHSA enrichment
  40. 2026-06-15 17:49 UTCEPSS rescore
  41. 2026-06-15 17:49 UTCEPSS rescore
  42. 2026-06-14 23:18 UTCEPSS rescore
  43. 2026-06-14 23:16 UTCEG score recompute
  44. 2026-06-14 23:16 UTCGHSA enrichment
  45. 2026-06-13 23:19 UTCEG score recompute
  46. 2026-06-13 23:19 UTCGHSA enrichment
  47. 2026-06-13 23:00 UTCEPSS rescore
  48. 2026-06-12 23:23 UTCEG score recompute
  49. 2026-06-12 23:23 UTCGHSA enrichment
  50. 2026-06-12 23:12 UTCEPSS rescore
  51. 2026-06-12 23:12 UTCEPSS rescore
  52. 2026-06-11 23:26 UTCEG score recompute
  53. 2026-06-11 23:26 UTCGHSA enrichment
  54. 2026-06-11 14:00 UTCEPSS rescore
  55. 2026-06-10 23:30 UTCEG score recompute
  56. 2026-06-10 23:30 UTCGHSA enrichment
  57. 2026-06-10 22:19 UTCEPSS rescore
  58. 2026-06-10 13:22 UTCEPSS rescore
  59. 2026-06-09 23:34 UTCEG score recompute
  60. 2026-06-09 23:34 UTCGHSA enrichment
  61. 2026-06-08 23:38 UTCEG score recompute
  62. 2026-06-08 23:37 UTCGHSA enrichment
  63. 2026-06-08 14:17 UTCEPSS rescore
  64. 2026-06-07 23:41 UTCEG score recompute
  65. 2026-06-07 23:41 UTCGHSA enrichment
  66. 2026-06-07 15:25 UTCEPSS rescore
  67. 2026-06-06 23:45 UTCEG score recompute
  68. 2026-06-06 23:45 UTCGHSA enrichment
  69. 2026-06-06 13:47 UTCEPSS rescore
  70. 2026-06-05 23:48 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8608?
CVE-2026-8608 is a medium vulnerability published on June 5, 2026. The Event Monster – Event Management, Events Calendar, Tickets plugin for WordPress is vulnerable to Insufficient Verification of Data Authenticity in versions up to, and including, 2.1.0. This is due to the capturepayment() AJAX handler (registered via wpajaxnoprivemcapturepayment) trusting…
When was CVE-2026-8608 disclosed?
CVE-2026-8608 was first published in the National Vulnerability Database on June 5, 2026, with the most recent update on June 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8608 actively exploited?
CVE-2026-8608 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8608?
CVE-2026-8608 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-8608?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8608, 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.

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