CVE-2026-25312Public exploitNetwork attack vector

Unauthenticated payment bypass via booking confirmation AJAX

Published Mar 19, 2026 · Updated Mar 19, 2026

Missing authorization in Metagauss EventPrime 4.2.8.3 and earlier allows remote attackers to alter PayPal booking confirmations. The ep_confirm_paypal_order AJAX handler accepts unauthenticated requests and checks ownership only when the booking has a nonempty user value before confirming the supplied booking. Exploitation requires valid booking and PayPal order identifiers and can create unauthorized confirmation and payment-state changes.

CVSS severity7.5
High
EPSS probability0.21%
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 Metagauss EventPrime 4.2.8.3 and earlier allows remote attackers to alter PayPal booking confirmations. The ep_confirm_paypal_order AJAX handler accepts unauthenticated requests and checks ownership only when the booking has a nonempty user value before confirming the supplied booking. Exploitation requires valid booking and PayPal order identifiers and can create unauthorized confirmation and payment-state changes.

The record

CVE
CVE-2026-25312
Published
Mar 19, 2026
Updated
Mar 19, 2026
Vendor
EventPrime Events
Product
EventPrime
Classifications
CWE-862
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 19, 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=n/a <=4.2.8.3 changes=[{"at":"4.2.8.4","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

EventPrime Events · EventPrimeversion=n/a <=4.2.8.3 changes=[{"at":"4.2.8.4","status":"unaffected"}]

Published CVSS scores

7.5PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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 exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization

Public exploit references

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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