OpenMage magento-lts before 20.18.2 Stored XSS via Product Name in MSRP Popup
CVE-2026-128051

4.8MEDIUM

Key Information:

Vendor

Openmage

Status
Magento-lts
Vendor
CVE Published:
13 November 2026

What is CVE-2026-128051?

OpenMage magento-lts before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 contains a stored cross-site scripting vulnerability because storefront MSRP/MAP popup and Qty Increments notice templates output product names without proper escaping. Attackers with admin product-edit rights can store a malicious product name that executes script when shoppers view product, category, or wishlist pages.

Affected Version(s)

magento-lts 0 < 20.18.2

magento-lts 21.0.0-beta1 < 21.0.0-beta3

magento-lts 20.18.2

References

https://github.com/OpenMage/magento-lts/security/advisori...
vendor-advisory
https://github.com/OpenMage/magento-lts/commit/64ff7fce3d...
patch
https://github.com/OpenMage/magento-lts/commit/2437b01af9...
patch

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

v3rticalmoney
colinmollenhour
Hanmac
.