CVE-2026-128040
OpenMage magento-lts before 20.18.2 Stored XSS via Admin Dataflow, Tax, OAuth, PayPal Fields
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 admin pages render Dataflow profile link variables, tax rate titles, OAuth consumer names, and PayPal certificate filenames without escaping. An administrator restricted to one affected area can store script that runs when another administrator, including a full administrator, opens the page, reading the form key and performing actions with that administrator's privileges.
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: VulnCheckFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckFix
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 / 8.4 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 6.1 medium |
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N | CNA: VulnCheck |
| 4.0 / 8.4 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/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 / 6.1 medium |
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/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-m858-x59w-rmp5CNA: VulnCheck · vendor-advisory
- https://github.com/OpenMage/magento-lts/commit/d10314ddda9a6081bc27370b463b5f77c2e499deCNA: VulnCheck · patch
- https://github.com/OpenMage/magento-lts/commit/7f7a9deaac11fd2437bb1f8065db152a4b620609CNA: VulnCheck · patch
- https://github.com/OpenMage/magento-lts/commit/62d2885fa6e7a4454e3a5c7765a6a5ca0085ecc1CNA: VulnCheck · patch
- https://github.com/OpenMage/magento-lts/commit/e97e257b8f8d74d2e52dbf28caa211c262ff26beCNA: VulnCheck · patch
- https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-stored-xss-via-admin-dataflow-tax-oauth-paypal-fieldsCNA: VulnCheck · third-party-advisory
- https://github.com/OpenMage/magento-lts/commit/62d2885fa6e7a4454e3a5c7765a6a5ca0085ecc1[email protected]
- https://github.com/OpenMage/magento-lts/commit/7f7a9deaac11fd2437bb1f8065db152a4b620609[email protected]
- https://github.com/OpenMage/magento-lts/commit/d10314ddda9a6081bc27370b463b5f77c2e499de[email protected]
- https://github.com/OpenMage/magento-lts/commit/e97e257b8f8d74d2e52dbf28caa211c262ff26be[email protected]
- https://github.com/OpenMage/magento-lts/security/advisories/GHSA-m858-x59w-rmp5[email protected]
- https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-stored-xss-via-admin-dataflow-tax-oauth-paypal-fields[email protected]
For agents and automation
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Endpoints and access details
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