CVE-2026-13039

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-07-10. 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
5.3EG
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 Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) plugin for WordPress is vulnerable to authorization bypass due to a regression in versions from 4.0.26 up to and including 4.1.15. This is due to the plugin not properly verifying that a user is authorized to perform an action in the payment_complete() function of PaymentController.php. This makes it possible for unauthenticated attackers to mark unpaid ticket orders as completed by submitting a fabricated SureCart checkout ID or FluentCart cart hash, granting themselves paid event access, QR-code attendee tickets, and order confirmation emails without making any real payment. The wp_rest nonce required to reach the vulnerable endpoint is embedded in every public event page, meaning no WordPress session or credentials are needed to obtain it. This vulnerability represents a regression — the same function and endpoint were previously patched but the fix did not persist through subsequent releases.

CVSS v3
5.3
EG Score
5.3(medium)
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
28%
KEV
Not listed

Published

July 10, 2026

Last Modified

July 13, 2026

References (2)

Vendor Advisories for CVE-2026-13039(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 14× in last 7d / 75× 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 113 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-13039?
CVE-2026-13039 is a medium vulnerability published on July 10, 2026. The Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) plugin for WordPress is vulnerable to authorization bypass due to a regression in versions from 4.0.26 up to and including 4.1.15. This is due to the plugin not properly verifying that a user is authorized to perform…
When was CVE-2026-13039 disclosed?
CVE-2026-13039 was first published in the National Vulnerability Database on July 10, 2026, with the most recent update on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-13039 actively exploited?
CVE-2026-13039 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 72.0% of all scored CVEs.
What is the CVSS score of CVE-2026-13039?
CVE-2026-13039 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-13039?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-13039, 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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