Booking Package <= 1.7.06 - Unauthenticated Price Manipulation via 'amount' Parameter

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Summary

CVECVE-2026-4911
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-28 08:16:01 UTC
Updated2026-04-28 08:16:01 UTC
DescriptionThe Booking Package plugin for WordPress is vulnerable to Price Manipulation in versions up to, and including, 1.7.06 This is due to the intentForStripe() function passing user-controlled $_POST['amount'] directly to the Stripe PaymentIntent API without validation, and the commitStripe() function ignoring the server-calculated amount when confirming the payment. While the server correctly calculates the booking cost via getAmount() based on services, guests, taxes, and coupons, this calculated amount is never validated against or used to update the PaymentIntent because the critical code in CreditCard.php that would include the calculated amount in the PaymentIntent update is commented out. This makes it possible for unauthenticated attackers to book services at arbitrary prices (e.g., $0.01 instead of $500.00) by manipulating the amount parameter during PaymentIntent creation and completing the booking with the fraudulent payment.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

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

Problem Types: CWE-472 | CWE-472 CWE-472 External Control of Assumed-Immutable Web Parameter

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Masaakitanaka Booking Package affected 1.7.06 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/booking-package/tags/1.7.04/lib/Schedule.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/booking-package/tags/1.7.04/lib/CreditCard.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/booking-package/trunk/lib/CreditCard.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/booking-package/tags/1.7.04/lib/Schedule.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/booking-package/tags/1.7.04/lib/CreditCard.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/booking-package/trunk/lib/Schedule.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/booking-package/trunk/lib/Schedule.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/booking-package/trunk/lib/CreditCard.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/61d63c5a-6ca6-42d8-ab0a-152d9... [email protected] www.wordfence.com
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: momopon1415 (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-27T18:18:55.000ZDisclosed
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