CVE-2026-128053
OpenMage magento-lts before 20.18.2 Reflected XSS via Error Pages SCRIPT_NAME
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| magento-lts OpenMage |
≥ 0; < 20.18.2 (affected, semver) 20.18.2 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
| magento-lts OpenMage |
≥ 21.0.0-beta1; < 21.0.0-beta3 (affected, semver) 21.0.0-beta3 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 2.3 low |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | CNA: VulnCheck |
| 3.1 / 4.7 medium |
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N | CNA: VulnCheck |
| 4.0 / 2.3 low |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 4.7 medium |
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/OpenMage/magento-lts/security/advisories/GHSA-6pvw-8mv9-r8vrCNA: VulnCheck · vendor-advisory
- https://github.com/OpenMage/magento-lts/commit/0bcec215c25941f900d46657d63fd0862960edf6CNA: VulnCheck · patch
- https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-reflected-xss-via-error-pages-script-nameCNA: VulnCheck · third-party-advisory
- https://github.com/OpenMage/magento-lts/commit/0bcec215c25941f900d46657d63fd0862960edf6[email protected]
- https://github.com/OpenMage/magento-lts/security/advisories/GHSA-6pvw-8mv9-r8vr[email protected]
- https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-reflected-xss-via-error-pages-script-name[email protected]
For agents and automation
Read public disclosures for free as Markdown or JSON. Compatible browsers also expose native WebMCP tools to search disclosures, read this page, and discover API access.
Use the ontology-linked Cyber API with x402 pay per request, or a Y2 Pro or Elite API key with the intel:cyber scope.
Endpoints and access details
https://api.y2.dev/api/v2/cyber/cveshttps://api.y2.dev/api/v2/cyber/cves/{cveId}
A workspace owner or admin can create a Pro or Elite API key. Send Authorization: Bearer <Y2_API_KEY> from your trusted agent runtime.
For x402, omit Authorization and read the HTTP 402 payment challenge before signing a retry. Public browser tools do not make payments.