{"affected":[{"defaultStatus":"unaffected","product":"magento-lts","source":"CNA: VulnCheck","vendor":"OpenMage","versions":[{"lessThan":"20.18.2","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"20.18.2","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"magento-lts","source":"CNA: VulnCheck","vendor":"OpenMage","versions":[{"lessThan":"21.0.0-beta3","status":"affected","version":"21.0.0-beta1","versionType":"semver"},{"status":"unaffected","version":"21.0.0-beta3","versionType":"semver"}]}],"cveId":"CVE-2026-128053","cwes":["CWE-79"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":2.3,"severity":"low","source":"CNA: VulnCheck","vector":"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","version":"4.0"},{"score":4.7,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},{"score":2.3,"severity":"low","source":"NVD: disclosure@vulncheck.com","vector":"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","version":"4.0"},{"score":4.7,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}],"modifiedAt":1794565091240,"publishedAt":1794562429875,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/OpenMage/magento-lts/security/advisories/GHSA-6pvw-8mv9-r8vr"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/OpenMage/magento-lts/commit/0bcec215c25941f900d46657d63fd0862960edf6"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-reflected-xss-via-error-pages-script-name"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/OpenMage/magento-lts/commit/0bcec215c25941f900d46657d63fd0862960edf6"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/OpenMage/magento-lts/security/advisories/GHSA-6pvw-8mv9-r8vr"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-reflected-xss-via-error-pages-script-name"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/OpenMage/magento-lts/commit/0bcec215c25941f900d46657d63fd0862960edf6"}],"revision":"dbf78bca31c0a672a3b55948d7f101441f4c3323d1dffde3cea82c9aa53bdd5c","sources":[{"modifiedAt":1794562429875,"name":"CNA: VulnCheck","retrievedAt":1794564848278,"url":"https://www.cve.org/CVERecord?id=CVE-2026-128053"},{"modifiedAt":1794565091240,"name":"NVD","retrievedAt":1794572255571,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-128053"}],"ssvc":null,"status":"published","title":"OpenMage magento-lts before 20.18.2 Reflected XSS via Error Pages SCRIPT_NAME","updatedAt":1794572255571}