by Kastro
Paper/Archive/CVE-2026-128047

CVE-2026-128047

OpenMage magento-lts — OpenMage magento-lts before 20.18.2 Account Takeover via Predictable Confirmation Key

CVSS 9.2
critical.is priorityof 100
28
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0No EPSS score.000 × 200.0No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

OpenMage magento-lts before 20.18.2 and 21.0.0-beta pre-releases before 21.0.0-beta3 generate customer email-confirmation keys with md5(uniqid()) and customer and administrator password-reset tokens with the non-cryptographic uniqHash(). Unauthenticated attackers can brute-force the roughly 20-bit confirmation key via the unrate-limited confirmAction endpoint to log in as pending customers, or predict administrator reset tokens after recovering generator state.

Affected

ProductAffectedFixed inSource
magento-lts< 20.18.220.18.2CNA
magento-lts21.0.0-beta1 – < 21.0.0-beta321.0.0-beta3CNA

Scores by source

VulnCheck (CNA)9.2CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
VulnCheck (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

advisorygithub.com/OpenMage/magento-lts/security/advisories/GHSA-7j66-6mw7-rgfxpatchgithub.com/OpenMage/magento-lts/commit/4a8d91c692524de4a07e70af5367b6cb67a9516dpatchgithub.com/OpenMage/magento-lts/commit/9f5a1c3cf63f5cf6ac9f90b041a97a474cea04c2writeupvulncheck.com/advisories/openmage-magento-lts-before-20.18.2-account-takeover-via-predictable-confirmation-key