{"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-2026-128049","cwes":["CWE-352"],"description":"OpenMage Magento LTS before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 contains a cross-site request forgery vulnerability in the admin and storefront OAuth confirm and confirmSimple actions, which accept GET requests without form-key validation. Attackers holding OAuth consumer credentials can lure a logged-in administrator or customer to a crafted confirm URL that authorizes the attacker's request token, then exchange it at /oauth/token for a persistent REST API access token bound to the victim.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":9.4,"severity":"critical","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},{"score":9,"severity":"critical","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},{"score":9.4,"severity":"critical","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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":9,"severity":"critical","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794565090820,"publishedAt":1794562432073,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/OpenMage/magento-lts/security/advisories/GHSA-grrq-9gq2-vm55"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/OpenMage/magento-lts/commit/1f83e49b60e08aa7ba89dcc2d41ea21f62c0b796"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-csrf-via-oauth-authorization-confirm"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/OpenMage/magento-lts/commit/1f83e49b60e08aa7ba89dcc2d41ea21f62c0b796"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/OpenMage/magento-lts/security/advisories/GHSA-grrq-9gq2-vm55"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-csrf-via-oauth-authorization-confirm"}],"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/1f83e49b60e08aa7ba89dcc2d41ea21f62c0b796"}],"revision":"38dc4b74f3c22f91dbcf5ef89f043e41045ae34b2e19a49b357d71ac9e134841","sources":[{"modifiedAt":1794562432073,"name":"CNA: VulnCheck","retrievedAt":1794564844967,"url":"https://www.cve.org/CVERecord?id=CVE-2026-128049"},{"modifiedAt":1794565090820,"name":"NVD","retrievedAt":1794572255091,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-128049"}],"ssvc":null,"status":"published","title":"OpenMage Magento LTS before 20.18.2 CSRF via OAuth Authorization Confirm","updatedAt":1794572255091}