CVE-2026-40488: OpenMage LTS: Customer File Upload Extension Blocklist Bypass → Remote Code Execution

high Affects openmage/magento-lts. Feed 2026.10.29.1, updated 2026-10-28; published 2026-04-21; advisory modified 2026-05-05.

OpenMage LTS: Customer File Upload Extension Blocklist Bypass → Remote Code Execution

Package: openmage/magento-lts Composer
Affected versions: <20.17.0
Fixed in: 20.17.0
Severity: high CVSS 8.8
Exploitation: not on CISA KEV · EPSS 1% (52.7th percentile)
Published: 2026-04-21
Source: osv.dev

References

CWE-434

NVD record openmage/magento-lts advisories

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