CVE-2026-15152Public exploitNetwork attack vector

Unauthenticated payment bypass via unvalidated PayPal notification

Published Aug 6, 2026 · Updated Aug 6, 2026

Insufficient payment verification in ThimPress WP Hotel Booking before 2.3.2 allows remote attackers to mark bookings paid via PayPal notices. The PayPal Standard notification handler accepts VERIFIED notices without confirming the receiver belongs to the site's merchant and compares the paid amount with an uninitialized booking total of zero. Any visitor holding a booking key can use a genuine self-payment or zero amount to advance the booking without paying the site owner.

CVSS severity5.3
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient payment verification in ThimPress WP Hotel Booking before 2.3.2 allows remote attackers to mark bookings paid via PayPal notices. The PayPal Standard notification handler accepts VERIFIED notices without confirming the receiver belongs to the site's merchant and compares the paid amount with an uninitialized booking total of zero. Any visitor holding a booking key can use a genuine self-payment or zero amount to advance the booking without paying the site owner.

The record

CVE
CVE-2026-15152
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
Overdrive Eletrônica
Product
WP Hotel Booking
Classifications
CWE-345, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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 <2.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Overdrive Eletrônica · WP Hotel Bookingversion=0 <2.3.2

Published CVSS scores

5.3WPScanCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-345Insufficient Verification of Data Authenticity
T1565.001Stored Data Manipulation

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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