CVE-2026-77702Network attack vectorHinoki check available

Payment bypass via overprivileged guest order token

Published Sep 16, 2026 · Updated Sep 16, 2026

Missing authorization in Arraytics Eventin before 4.1.24 allows remote attackers to replace paid tickets with free tickets. The checkout order-update path treats a guest-issued order_token as sufficient authority and applies attacker-selected ticket changes without revalidating the resulting payment. Possession of a token from a guest checkout is sufficient; no account is required, and an order can be completed without the original charge.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authorization in Arraytics Eventin before 4.1.24 allows remote attackers to replace paid tickets with free tickets. The checkout order-update path treats a guest-issued order_token as sufficient authority and applies attacker-selected ticket changes without revalidating the resulting payment. Possession of a token from a guest checkout is sufficient; no account is required, and an order can be completed without the original charge.

The record

CVE
CVE-2026-77702
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
Arraytics
Product
Eventin
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=0 <4.1.24

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Arraytics · Eventinversion=0 <4.1.24

Published CVSS scores

No CVSS assessment is available in this record.

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

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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