Payment Button for PayPal <= 1.2.3.44 - Unauthenticated Payment Price Manipulation
CVSS score
5.3
EPSS probability
%0.3
Risk score
0.0
Published
2 mo ago
Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.
Impact on My Inventory
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
Tam uyum
Evidence confidence
%58
Short explanation
The Payment Button for PayPal plugin before 1.2.3.44 allows unauthenticated attackers to manipulate payment prices via client-supplied inputs without server-side validation, enabling creation of real PayPal orders at arbitrary lower amounts. CVSS score is 5.3 (medium). Patch status is UNKNOWN. No fixed version is publicly documented.
Financial loss to merchants due to unauthorized order creation. Medium severity with real-world impact on e-commerce operations. Requires immediate patching if the plugin is in use.
What should be done?
- Update the Payment Button for PayPal plugin to a version above 1.2.3.44.
- Follow vendor advisories for the latest fixed version.
- No fixed version is publicly documented in available references.
The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.
Chain of evidence and sources
Payment Button for PayPal WordPress plugin 1.2.3.44'ye kadar olan sürümler, müşteri tarafından sağlanan ödeme miktarını sunucu tarafında doğrulamadan kabul ederek, herhangi bir düşük miktarlı gerçek PayPal siparişlerinin oluşturulmasına izin verir.
Açık, CVSS 3.1 puanı 5.3 ve CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N vektörüyle, orta ciddiyetli bir risk sunar ve bilgi kaybı potansiyelini içerir.
Resmî yama durumu bilinmemektedir; yama durumu 'Bilinmeyen' olarak işaretlenmiştir ve üretici kaynaklarından güvenilir bir değerlendirme yoktur.
Show the technical text from the sources
The Payment Button for PayPal WordPress plugin through 1.2.3.44 does not enforce the merchant-configured price server-side and trusts a client-supplied payment amount, allowing unauthenticated attackers to create a real PayPal order against the merchant for an arbitrary lower amount.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Explanation produced with the local qwen3:4b-instruct model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-16990 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Unknown | Payment Button for PayPal | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 5.3 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | CVE CNA |
| 5.3 | CVSS V31 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.
Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-16990 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-16990 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
CVSS Vector Radar Chart
5.3 / 10Vulnerability Scoring Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NYama durumu bilinmiyor
Similar Vulnerabilities
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