OpenMage magento-lts before 20.18.2 Reflected XSS via Error Pages SCRIPT_NAME
CVE-2026-128053

2.3LOW

Key Information:

Vendor

Openmage

Status
Magento-lts
Vendor
CVE Published:
13 November 2026

What is CVE-2026-128053?

OpenMage magento-lts before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 contains a reflected cross-site scripting vulnerability in its error pages, which print SCRIPT_NAME-derived URLs built by errors/processor.php without escaping. Unauthenticated attackers can craft links that trigger uncaught exceptions on servers deriving SCRIPT_NAME from the request path, executing script in the storefront origin within victims' browsers.

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/0bcec215c2...
patch
https://www.vulncheck.com/advisories/openmage-magento-lts...
third-party-advisory

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

justlife4x4
0xElkot
colinmollenhour
.