CVE-2026-128046 PUBLISHED

OpenMage magento-lts 20.17.0 before 20.18.2 Unrestricted File Upload RCE via Custom Options

Assigner: VulnCheck
Reserved: 12.11.2026 Published: 13.11.2026 Updated: 13.11.2026

OpenMage magento-lts 20.17.0 before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 contains an unrestricted file upload vulnerability because the general/file/protected_extensions blocklist omits phar, php8, and phps. Unauthenticated attackers can upload a .phar file through a product File custom option to a predictable media/custom_options path and request it directly to execute code on servers that map .phar to PHP and serve that directory.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.2

Product Status

Vendor OpenMage
Product magento-lts
Versions Default: unaffected
  • affected from 20.17.0 to 20.18.2 (excl.)
  • Version 20.18.2 is unaffected
Vendor OpenMage
Product magento-lts
Versions Default: unaffected
  • affected from 21.0.0-beta1 to 21.0.0-beta3 (excl.)
  • Version 21.0.0-beta3 is unaffected

Credits

  • arpitjain099 reporter
  • 4n86rakam1 finder
  • colinmollenhour remediation developer
  • Hanmac remediation reviewer

References

Problem Types

  • Incomplete List of Disallowed Inputs CWE