Vulnerability Database

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Total vulnerabilities in the database

CVE-2009-4771 — ubercart / ubercart

Improper Input Validation

The PayPal Website Payments Standard functionality in the Ubercart module 5.x before 5.x-1.9 and 6.x before 6.x-2.1 for Drupal does not properly validate orders, which allows remote attackers to trigger unspecified "duplicate actions" via unknown vectors.

  • Published: Apr 20, 2010
  • Updated: Nov 15, 2026
  • CVE: CVE-2009-4771
  • Severity: Medium
  • Exploit:
  • CISA KEV:

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:N/I:P/A:N

CWEs:

Software Affected versions
ubercart / ubercart = 5.x-1.0
ubercart / ubercart = 5.x-1.0-alpha1
ubercart / ubercart = 5.x-1.0-alpha2
ubercart / ubercart = 5.x-1.0-alpha3
ubercart / ubercart = 5.x-1.0-alpha4
ubercart / ubercart = 5.x-1.0-alpha5
ubercart / ubercart = 5.x-1.0-alpha6
ubercart / ubercart = 5.x-1.0-alpha6b
ubercart / ubercart = 5.x-1.0-alpha6c
ubercart / ubercart = 5.x-1.0-alpha7
ubercart / ubercart = 5.x-1.0-alpha7b
ubercart / ubercart = 5.x-1.0-alpha7c
ubercart / ubercart = 5.x-1.0-alpha7d
ubercart / ubercart = 5.x-1.0-alpha7e
ubercart / ubercart = 5.x-1.0-alpha8
ubercart / ubercart = 5.x-1.0-beta1
ubercart / ubercart = 5.x-1.0-beta2
ubercart / ubercart = 5.x-1.0-beta3
ubercart / ubercart = 5.x-1.0-beta4
ubercart / ubercart = 5.x-1.0-beta5
ubercart / ubercart = 5.x-1.0-beta6
ubercart / ubercart = 5.x-1.0-beta7
ubercart / ubercart = 5.x-1.0-rc1
ubercart / ubercart = 5.x-1.0-rc2
ubercart / ubercart = 5.x-1.0-rc3
ubercart / ubercart = 5.x-1.0-rc4
ubercart / ubercart = 5.x-1.0-rc5
ubercart / ubercart = 5.x-1.1
ubercart / ubercart = 5.x-1.2
ubercart / ubercart = 5.x-1.3
ubercart / ubercart = 5.x-1.3-rc1
ubercart / ubercart = 5.x-1.4
ubercart / ubercart = 5.x-1.5
ubercart / ubercart = 5.x-1.6
ubercart / ubercart = 5.x-1.7
ubercart / ubercart = 5.x-1.8
ubercart / ubercart = 6.x-2.0
ubercart / ubercart = 6.x-2.0-beta1
ubercart / ubercart = 6.x-2.0-beta2
ubercart / ubercart = 6.x-2.0-beta3
ubercart / ubercart = 6.x-2.0-beta4
ubercart / ubercart = 6.x-2.0-beta5
ubercart / ubercart = 6.x-2.0-beta6
ubercart / ubercart = 6.x-2.0-dev
ubercart / ubercart = 6.x-2.0-rc1
ubercart / ubercart = 6.x-2.0-rc2
ubercart / ubercart = 6.x-2.0-rc3
ubercart / ubercart = 6.x-2.0-rc4
ubercart / ubercart = 6.x-2.0-rc5
ubercart / ubercart = 6.x-2.0-rc6
ubercart / ubercart = 6.x-2.0-rc7

Is CVE-2009-4771 exposed on your perimeter?

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Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.