How severe is CVE-2009-4771?

CVE-2009-4771 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-4771 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4771?

CVE-2009-4771 primarily affects Ubercart. In total, 51 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4771?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-4771 published?

CVE-2009-4771 was published on 2010-04-20 and last updated on 2026-06-16.

CVE-2009-4771

CVE-2009-4771 is a medium-severity vulnerability in Ubercart with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Ubercart
Published: 2010-04-20
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2009-4771?: 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.
How severe is CVE-2009-4771?: CVE-2009-4771 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-4771 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4771?: CVE-2009-4771 primarily affects Ubercart. In total, 51 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4771?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-4771 published?: CVE-2009-4771 was published on 2010-04-20 and last updated on 2026-06-16.

References

Affected products (51)

cpe:2.3:a:ubercart:ubercart:5.x-1.0:*:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha2:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha3:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha4:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha5:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha6:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha6b:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha6c:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha7:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha7b:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha7c:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha7d:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha7e:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:alpha8:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:beta1:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:beta2:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:beta3:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:beta4:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:beta5:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:beta6:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:beta7:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:rc3:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:rc4:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.0:rc5:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.1:*:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.2:*:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.3:*:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.3:rc1:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.4:*:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.5:*:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.6:*:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.7:*:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:5.x-1.8:*:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:6.x-2.0:*:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:6.x-2.0:beta1:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:6.x-2.0:beta2:*:*:*:*:*:*
cpe:2.3:a:ubercart:ubercart:6.x-2.0:beta3:*:*:*:*:*:*

More vulnerabilities in Ubercart

CVE-2013-7302 — Medium (CVSS 6.8): Session fixation vulnerability in the Ubercart module 6.x-2.x before 6.x-2.13 and 7.x-3.x before 7.x-3.6 for Drupal,…
CVE-2009-4773 — Medium (CVSS 6.8): Cross-site request forgery (CSRF) vulnerability in the order-management functionality in the Ubercart module 5.x before…
CVE-2012-2301 — Medium (CVSS 6.0): The Ubercart module 6.x-2.x before 6.x-2.8 for Drupal allows remote authenticated users with the "administer product…
CVE-2012-5804 — Medium (CVSS 5.8): The CyberSource module in Ubercart does not verify that the server hostname matches a domain name in the subject's…
CVE-2012-5803 — Medium (CVSS 5.8): The Authorize.Net module in Ubercart does not verify that the server hostname matches a domain name in the subject's…
CVE-2012-5802 — Medium (CVSS 5.8): The PayPal module in Ubercart does not verify that the server hostname matches a domain name in the subject's Common…

All CVEs affecting Ubercart →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →