CVE-2026-13039Network attack vector

Unauthenticated payment bypass via fabricated checkout identifiers

Published Jul 10, 2026 · Updated Jul 10, 2026

Missing authorization in Arraytics Eventin 4.0.26 through 4.1.15 allows remote attackers to mark unpaid orders complete via its REST API. PaymentController.php's payment_complete() function accepts a fabricated SureCart checkout ID or FluentCart cart hash without verifying authorization or payment. A wp_rest nonce exposed on every public event page makes the endpoint reachable without a WordPress session, granting paid access, attendee QR-code tickets, and confirmation emails.

CVSS severity5.3
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Arraytics Eventin 4.0.26 through 4.1.15 allows remote attackers to mark unpaid orders complete via its REST API. PaymentController.php's payment_complete() function accepts a fabricated SureCart checkout ID or FluentCart cart hash without verifying authorization or payment. A wp_rest nonce exposed on every public event page makes the endpoint reachable without a WordPress session, granting paid access, attendee QR-code tickets, and confirmation emails.

The record

CVE
CVE-2026-13039
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
Arraytics
Product
Eventin
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.26 <=4.1.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Arraytics · Eventinversion=4.0.26 <=4.1.15

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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