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Vulnerability Details CVE-2026-40488

Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform with a high level of backward compatibility. Prior to version 20.17.0, the product custom option file upload in OpenMage LTS uses an incomplete blocklist (`forbidden_extensions = php,exe`) to prevent dangerous file uploads. This blocklist can be trivially bypassed by using alternative PHP-executable extensions such as `.phtml`, `.phar`, `.php3`, `.php4`, `.php5`, `.php7`, and `.pht`. Files are stored in the publicly accessible `media/custom_options/quote/` directory, which lacks server-side execution restrictions for some configurations, enabling Remote Code Execution if this directory is not explicitly denied script execution. Version 20.17.0 patches the issue.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.001

EPSS Ranking 27.9%

CVSS Severity

CVSS v3 Score 8.8

References

https://github.com/OpenMage/magento-lts/security/advisories/GHSA-3j5q-7q7h-2hhv

Products affected by CVE-2026-40488

Openmage » Magento » Version: N/A

cpe:2.3:a:openmage:magento:-
Openmage » Magento » Version: 1.1.1

cpe:2.3:a:openmage:magento:1.1.1
Openmage » Magento » Version: 1.1.2

cpe:2.3:a:openmage:magento:1.1.2
Openmage » Magento » Version: 1.1.3

cpe:2.3:a:openmage:magento:1.1.3
Openmage » Magento » Version: 1.1.4

cpe:2.3:a:openmage:magento:1.1.4
Openmage » Magento » Version: 1.1.5

cpe:2.3:a:openmage:magento:1.1.5
Openmage » Magento » Version: 1.1.6

cpe:2.3:a:openmage:magento:1.1.6
Openmage » Magento » Version: 1.1.7

cpe:2.3:a:openmage:magento:1.1.7
Openmage » Magento » Version: 1.1.8

cpe:2.3:a:openmage:magento:1.1.8
Openmage » Magento » Version: 1.2.0

cpe:2.3:a:openmage:magento:1.2.0
Openmage » Magento » Version: 1.2.0.1

cpe:2.3:a:openmage:magento:1.2.0.1
Openmage » Magento » Version: 1.2.0.2

cpe:2.3:a:openmage:magento:1.2.0.2
Openmage » Magento » Version: 1.2.0.3

cpe:2.3:a:openmage:magento:1.2.0.3
Openmage » Magento » Version: 1.2.1

cpe:2.3:a:openmage:magento:1.2.1
Openmage » Magento » Version: 1.2.1.1

cpe:2.3:a:openmage:magento:1.2.1.1
Openmage » Magento » Version: 1.2.1.2

cpe:2.3:a:openmage:magento:1.2.1.2
Openmage » Magento » Version: 1.3.0

cpe:2.3:a:openmage:magento:1.3.0
Openmage » Magento » Version: 1.3.1

cpe:2.3:a:openmage:magento:1.3.1
Openmage » Magento » Version: 1.3.1.1

cpe:2.3:a:openmage:magento:1.3.1.1
Openmage » Magento » Version: 1.3.2

cpe:2.3:a:openmage:magento:1.3.2
Openmage » Magento » Version: 1.3.2.1

cpe:2.3:a:openmage:magento:1.3.2.1
Openmage » Magento » Version: 1.3.2.2

cpe:2.3:a:openmage:magento:1.3.2.2
Openmage » Magento » Version: 1.3.2.3

cpe:2.3:a:openmage:magento:1.3.2.3
Openmage » Magento » Version: 1.3.2.4

cpe:2.3:a:openmage:magento:1.3.2.4
Openmage » Magento » Version: 1.3.3.0

cpe:2.3:a:openmage:magento:1.3.3.0
Openmage » Magento » Version: 1.4.0.0

cpe:2.3:a:openmage:magento:1.4.0.0
Openmage » Magento » Version: 1.4.0.1

cpe:2.3:a:openmage:magento:1.4.0.1
Openmage » Magento » Version: 1.4.1.0

cpe:2.3:a:openmage:magento:1.4.1.0
Openmage » Magento » Version: 1.4.1.1

cpe:2.3:a:openmage:magento:1.4.1.1
Openmage » Magento » Version: 1.4.2.0

cpe:2.3:a:openmage:magento:1.4.2.0
Openmage » Magento » Version: 1.5.0.0

cpe:2.3:a:openmage:magento:1.5.0.0
Openmage » Magento » Version: 1.5.0.1

cpe:2.3:a:openmage:magento:1.5.0.1
Openmage » Magento » Version: 1.5.1.0

cpe:2.3:a:openmage:magento:1.5.1.0
Openmage » Magento » Version: 1.6.0.0

cpe:2.3:a:openmage:magento:1.6.0.0
Openmage » Magento » Version: 1.6.1.0

cpe:2.3:a:openmage:magento:1.6.1.0
Openmage » Magento » Version: 1.6.2.0

cpe:2.3:a:openmage:magento:1.6.2.0
Openmage » Magento » Version: 1.7.0.0

cpe:2.3:a:openmage:magento:1.7.0.0
Openmage » Magento » Version: 1.7.0.1

cpe:2.3:a:openmage:magento:1.7.0.1
Openmage » Magento » Version: 1.7.0.2

cpe:2.3:a:openmage:magento:1.7.0.2
Openmage » Magento » Version: 1.8.0.0

cpe:2.3:a:openmage:magento:1.8.0.0
Openmage » Magento » Version: 1.8.1.0

cpe:2.3:a:openmage:magento:1.8.1.0
Openmage » Magento » Version: 1.9.0.0

cpe:2.3:a:openmage:magento:1.9.0.0
Openmage » Magento » Version: 1.9.0.1

cpe:2.3:a:openmage:magento:1.9.0.1
Openmage » Magento » Version: 1.9.1.0

cpe:2.3:a:openmage:magento:1.9.1.0
Openmage » Magento » Version: 1.9.1.1

cpe:2.3:a:openmage:magento:1.9.1.1
Openmage » Magento » Version: 19.4.0

cpe:2.3:a:openmage:magento:19.4.0
Openmage » Magento » Version: 19.4.1

cpe:2.3:a:openmage:magento:19.4.1
Openmage » Magento » Version: 19.4.10

cpe:2.3:a:openmage:magento:19.4.10
Openmage » Magento » Version: 19.4.11

cpe:2.3:a:openmage:magento:19.4.11
Openmage » Magento » Version: 19.4.12

cpe:2.3:a:openmage:magento:19.4.12
Openmage » Magento » Version: 19.4.13

cpe:2.3:a:openmage:magento:19.4.13
Openmage » Magento » Version: 19.4.14

cpe:2.3:a:openmage:magento:19.4.14
Openmage » Magento » Version: 19.4.15

cpe:2.3:a:openmage:magento:19.4.15
Openmage » Magento » Version: 19.4.16

cpe:2.3:a:openmage:magento:19.4.16
Openmage » Magento » Version: 19.4.17

cpe:2.3:a:openmage:magento:19.4.17
Openmage » Magento » Version: 19.4.18

cpe:2.3:a:openmage:magento:19.4.18
Openmage » Magento » Version: 19.4.19

cpe:2.3:a:openmage:magento:19.4.19
Openmage » Magento » Version: 19.4.2

cpe:2.3:a:openmage:magento:19.4.2
Openmage » Magento » Version: 19.4.20

cpe:2.3:a:openmage:magento:19.4.20
Openmage » Magento » Version: 19.4.21

cpe:2.3:a:openmage:magento:19.4.21
Openmage » Magento » Version: 19.4.22

cpe:2.3:a:openmage:magento:19.4.22
Openmage » Magento » Version: 19.4.23

cpe:2.3:a:openmage:magento:19.4.23
Openmage » Magento » Version: 19.4.3

cpe:2.3:a:openmage:magento:19.4.3
Openmage » Magento » Version: 19.4.4

cpe:2.3:a:openmage:magento:19.4.4
Openmage » Magento » Version: 19.4.5

cpe:2.3:a:openmage:magento:19.4.5
Openmage » Magento » Version: 19.4.6

cpe:2.3:a:openmage:magento:19.4.6
Openmage » Magento » Version: 19.4.7

cpe:2.3:a:openmage:magento:19.4.7
Openmage » Magento » Version: 19.4.8

cpe:2.3:a:openmage:magento:19.4.8
Openmage » Magento » Version: 19.4.9

cpe:2.3:a:openmage:magento:19.4.9
Openmage » Magento » Version: 19.5.0

cpe:2.3:a:openmage:magento:19.5.0
Openmage » Magento » Version: 20.0.0

cpe:2.3:a:openmage:magento:20.0.0
Openmage » Magento » Version: 20.0.1

cpe:2.3:a:openmage:magento:20.0.1
Openmage » Magento » Version: 20.0.10

cpe:2.3:a:openmage:magento:20.0.10
Openmage » Magento » Version: 20.0.11

cpe:2.3:a:openmage:magento:20.0.11
Openmage » Magento » Version: 20.0.12

cpe:2.3:a:openmage:magento:20.0.12
Openmage » Magento » Version: 20.0.13

cpe:2.3:a:openmage:magento:20.0.13
Openmage » Magento » Version: 20.0.14

cpe:2.3:a:openmage:magento:20.0.14
Openmage » Magento » Version: 20.0.15

cpe:2.3:a:openmage:magento:20.0.15
Openmage » Magento » Version: 20.0.16

cpe:2.3:a:openmage:magento:20.0.16
Openmage » Magento » Version: 20.0.17

cpe:2.3:a:openmage:magento:20.0.17
Openmage » Magento » Version: 20.0.18

cpe:2.3:a:openmage:magento:20.0.18
Openmage » Magento » Version: 20.0.19

cpe:2.3:a:openmage:magento:20.0.19
Openmage » Magento » Version: 20.0.2

cpe:2.3:a:openmage:magento:20.0.2
Openmage » Magento » Version: 20.0.20

cpe:2.3:a:openmage:magento:20.0.20
Openmage » Magento » Version: 20.0.3

cpe:2.3:a:openmage:magento:20.0.3
Openmage » Magento » Version: 20.0.4

cpe:2.3:a:openmage:magento:20.0.4
Openmage » Magento » Version: 20.0.5

cpe:2.3:a:openmage:magento:20.0.5
Openmage » Magento » Version: 20.0.6

cpe:2.3:a:openmage:magento:20.0.6
Openmage » Magento » Version: 20.0.7

cpe:2.3:a:openmage:magento:20.0.7
Openmage » Magento » Version: 20.0.8

cpe:2.3:a:openmage:magento:20.0.8
Openmage » Magento » Version: 20.0.9

cpe:2.3:a:openmage:magento:20.0.9
Openmage » Magento » Version: 20.10.1

cpe:2.3:a:openmage:magento:20.10.1
Openmage » Magento » Version: 20.10.2

cpe:2.3:a:openmage:magento:20.10.2
Openmage » Magento » Version: 20.11.0

cpe:2.3:a:openmage:magento:20.11.0
Openmage » Magento » Version: 20.12.0

cpe:2.3:a:openmage:magento:20.12.0
Openmage » Magento » Version: 20.12.1

cpe:2.3:a:openmage:magento:20.12.1
Openmage » Magento » Version: 20.12.2

cpe:2.3:a:openmage:magento:20.12.2
Openmage » Magento » Version: 20.12.3

cpe:2.3:a:openmage:magento:20.12.3
Openmage » Magento » Version: 20.13.0

cpe:2.3:a:openmage:magento:20.13.0
Openmage » Magento » Version: 20.14.0

cpe:2.3:a:openmage:magento:20.14.0
Openmage » Magento » Version: 20.15.0

cpe:2.3:a:openmage:magento:20.15.0
Openmage » Magento » Version: 20.16.0

cpe:2.3:a:openmage:magento:20.16.0

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-40488

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