CVE-2026-4911 json
Booking Package <= 1.7.06 - Unauthenticated Price Manipulation via 'amount' Parameter
published 2026-04-28 6 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-26006
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
The 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.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
Affected products
- masaakitanaka Booking Package
Classification
- Weakness
-
- CWE-472 External Control of Assumed-Immutable Web Parameter
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/61d63c5a-6ca6-42d8-ab0a-152d9c95945c?source=cve
- plugins.trac.wordpress.org /browser/booking-package/trunk/lib/Schedule.php#L8942
- plugins.trac.wordpress.org /browser/booking-package/tags/1.7.04/lib/Schedule.php#L8948
- plugins.trac.wordpress.org /browser/booking-package/trunk/lib/CreditCard.php#L390
- plugins.trac.wordpress.org /browser/booking-package/tags/1.7.04/lib/CreditCard.php#L393
- plugins.trac.wordpress.org /browser/booking-package/trunk/lib/CreditCard.php#L545
- plugins.trac.wordpress.org /browser/booking-package/tags/1.7.04/lib/CreditCard.php#L548
- plugins.trac.wordpress.org /browser/booking-package/trunk/lib/Schedule.php#L15151
- plugins.trac.wordpress.org /browser/booking-package/tags/1.7.04/lib/Schedule.php#L15151
- plugins.trac.wordpress.org /changeset?old_path=%2Fbooking-package/tags/1.7.06&new_path=%2Fbooking-package/tags/1.7.07
Sources
- CVE List CVE-2026-4911
- NVD CVE-2026-4911
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.