{"id":"CVE-2020-9588","aliases":["BIT-magento-2020-9588","EUVD-2022-4261","GHSA-j2r4-2cr6-h3r3"],"status":"published","title":"Magento Signature verification bypass","description":"Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02924,"percentile":0.87145,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-203"],"published":"2020-06-26T20:20:53Z","modified":"2026-10-24T10:30:59Z","fixes":[{"ecosystem":"Packagist","package":"magento/community-edition","fixed_in":["2.3.4-p2"],"sources":["ghsa","osv"]},{"ecosystem":"Packagist","package":"magento/core","fixed_in":["1.9.4.5"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"magento","fixed_in":["2.2.12","2.3.5"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"magento/community-edition","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.4-p2"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"magento/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.4.5"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"magento/project-community-edition","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.0.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"magento","ranges":[{"type":"SEMVER","events":[{"introduced":"2.2.0"},{"fixed":"2.2.12"},{"introduced":"2.3.0"},{"fixed":"2.3.5"}]}]},{"source":"osv","ecosystem":"Packagist","package":"magento/community-edition","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.4-p2"}]}],"versions":["0.1.0-alpha100","0.1.0-alpha101","0.1.0-alpha102","0.1.0-alpha103","0.1.0-alpha104","0.1.0-alpha105","0.1.0-alpha106","0.1.0-alpha107","0.1.0-alpha108","0.1.0-alpha89","0.1.0-alpha90","0.1.0-alpha91","0.1.0-alpha92","0.1.0-alpha93","0.1.0-alpha94","0.1.0-alpha95","0.1.0-alpha96","0.1.0-alpha97","0.1.0-alpha98","0.1.0-alpha99","0.42.0-beta1","0.42.0-beta10","0.42.0-beta11","0.42.0-beta2","0.42.0-beta3","0.42.0-beta4","0.42.0-beta5","0.42.0-beta6","0.42.0-beta7","0.42.0-beta8","0.42.0-beta9","0.74.0-beta1","0.74.0-beta10","0.74.0-beta11","0.74.0-beta12","0.74.0-beta13","0.74.0-beta14","0.74.0-beta15","0.74.0-beta16","0.74.0-beta2","0.74.0-beta3","0.74.0-beta4","0.74.0-beta5","0.74.0-beta6","0.74.0-beta7","0.74.0-beta8","0.74.0-beta9","1.0.0-beta","1.0.0-beta2","1.0.0-beta3","1.0.0-beta4","1.0.0-beta5","1.0.0-beta6","2.0.0","2.0.0-rc","2.0.0-rc2","2.0.1","2.0.10","2.0.11","2.0.12","2.0.13","2.0.14","2.0.15","2.0.16","2.0.17","2.0.18","2.0.2","2.0.3","2.0.4","2.0.5","2.0.6","2.0.7","2.0.8","2.0.9","2.1.0","2.1.0-rc1","2.1.0-rc2","2.1.0-rc3","2.1.1","2.1.10","2.1.11","2.1.12","2.1.13","2.1.14","2.1.15","2.1.16","2.1.17","2.1.18","2.1.2","2.1.3","2.1.4","2.1.5","2.1.6","2.1.7","2.1.8","2.1.9","2.2.0","2.2.1","2.2.10","2.2.11","2.2.2","2.2.3","2.2.4","2.2.5","2.2.6","2.2.7","2.2.8","2.2.9","2.3.0","2.3.1","2.3.2","2.3.2-p2","2.3.3","2.3.3-p1","2.3.4"]},{"source":"osv","ecosystem":"Packagist","package":"magento/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.4.5"}]}]},{"source":"osv","ecosystem":"Packagist","package":"magento/project-community-edition","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.0.2"}]}],"versions":["0.1.0-alpha100","0.1.0-alpha101","0.1.0-alpha102","0.1.0-alpha103","0.1.0-alpha104","0.1.0-alpha105","0.1.0-alpha106","0.1.0-alpha107","0.1.0-alpha108","0.1.0-alpha89","0.1.0-alpha90","0.1.0-alpha91","0.1.0-alpha92","0.1.0-alpha93","0.1.0-alpha94","0.1.0-alpha95","0.1.0-alpha96","0.1.0-alpha97","0.1.0-alpha98","0.1.0-alpha99","0.42.0-beta1","0.42.0-beta10","0.42.0-beta11","0.42.0-beta2","0.42.0-beta3","0.42.0-beta4","0.42.0-beta5","0.42.0-beta6","0.42.0-beta7","0.42.0-beta8","0.42.0-beta9","0.74.0-beta1","0.74.0-beta10","0.74.0-beta11","0.74.0-beta12","0.74.0-beta13","0.74.0-beta14","0.74.0-beta15","0.74.0-beta16","0.74.0-beta2","0.74.0-beta3","0.74.0-beta4","0.74.0-beta5","0.74.0-beta6","0.74.0-beta7","0.74.0-beta8","0.74.0-beta9","1.0.0-beta","2.0.0","2.0.0-rc","2.0.0-rc2","2.0.1","2.0.2"]}],"products":[{"vendor":"adobe","product":"magento"},{"vendor":"magento","product":"magento"}],"references":[{"url":"https://helpx.adobe.com/security/products/magento/apsb20-22.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9588","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-j2r4-2cr6-h3r3"}],"sources":{"cve":[{"id":"CVE-2020-9588","description":"Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.","status":"published","published":"2020-06-26T20:20:53Z","modified":"2024-08-04T10:34:39.466Z","updated_at":"2026-11-02T14:35:49.209579Z"}],"euvd":[{"id":"EUVD-2022-4261","description":"Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.","status":"published","published":"2020-06-26T20:20:53Z","modified":"2024-08-04T10:34:39Z","updated_at":"2026-11-03T03:07:53.06089Z"}],"ghsa":[{"id":"GHSA-j2r4-2cr6-h3r3","title":"Magento Signature verification bypass","description":"Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.","status":"published","published":"2022-05-24T17:21:49Z","modified":"2025-02-10T20:30:11Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:38:29.866763Z"}],"nvd":[{"id":"CVE-2020-9588","description":"Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.","status":"published","published":"2020-06-26T21:15:17.327Z","modified":"2026-06-17T03:28:12.863Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:06:08.145904Z"}],"osv":[{"id":"CVE-2020-9588","description":"Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.","status":"published","published":"2020-06-26T21:15:17.327Z","modified":"2026-10-24T10:30:59.998915041Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:17.663289Z"},{"id":"GHSA-j2r4-2cr6-h3r3","title":"Magento Signature verification bypass","description":"Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.","status":"published","published":"2022-05-24T17:21:49Z","modified":"2025-02-10T20:41:07.797356Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T15:46:49.621585Z"},{"id":"BIT-magento-2020-9588","description":"Magento versions 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 and earlier have an observable timing discrepancy vulnerability. Successful exploitation could lead to signature verification bypass.","status":"published","published":"2024-03-06T11:03:48.494Z","modified":"2026-09-08T08:48:09.343295857Z","updated_at":"2026-11-02T15:28:32.645004Z"}]}}