{"id":"CVE-2020-10591","aliases":["EUVD-2022-0854","GHSA-6566-9526-52v6"],"status":"published","title":"Exposure of Sensitive Information to an Unauthorized Actor in Concord","description":"An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host information, nodes, API metadata, and references to usernames via api/v1/apikey.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.02493,"percentile":0.84797,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200"],"published":"2020-03-15T20:48:17Z","modified":"2026-10-20T10:51:38Z","fixes":[{"ecosystem":"Maven","package":"com.walmartlabs.concord:concord-common","fixed_in":["1.44.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"com.walmartlabs.concord:concord-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.44.0"}]}]},{"source":"osv","ecosystem":"Maven","package":"com.walmartlabs.concord:concord-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.44.0"}]}],"versions":["1.0.0","1.1.0","1.10.0","1.11.0","1.12.0","1.13.0","1.13.1","1.14.0","1.15.0","1.16.0","1.16.1","1.17.0","1.18.0","1.18.1","1.19.0","1.19.1","1.2.0","1.2.1","1.2.2","1.20.0","1.20.1","1.21.0","1.22.0","1.23.0","1.24.0","1.24.1","1.24.2","1.25.0","1.26.0","1.27.0","1.28.0","1.28.1","1.29.0","1.3.0","1.30.0","1.31.0","1.31.1","1.32.0","1.33.0","1.34.0","1.34.1","1.34.2","1.34.3","1.35.0","1.35.1","1.36.0","1.36.1","1.37.0","1.37.1","1.38.0","1.38.1","1.38.2","1.39.0","1.39.3","1.4.0","1.40.0","1.41.0","1.42.0","1.43.0","1.5.0","1.6.0","1.7.0","1.7.1","1.7.2","1.8.0","1.8.1","1.9.0"]}],"products":[{"vendor":"walmart","product":"concord"}],"references":[{"url":"https://github.com/walmartlabs/concord/issues/22","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/walmartlabs/concord/compare/1.43.0...1.44.0","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-10591","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-6566-9526-52v6"},{"url":"https://github.com/walmartlabs/concord","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-10591","description":"An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host information, nodes, API metadata, and references to usernames via api/v1/apikey.","status":"published","published":"2020-03-15T20:48:17Z","modified":"2024-08-04T11:06:10.117Z","updated_at":"2026-11-02T14:35:47.877975Z"}],"euvd":[{"id":"EUVD-2022-0854","description":"An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host information, nodes, API metadata, and references to usernames via api/v1/apikey.","status":"published","published":"2020-03-15T20:48:17Z","modified":"2024-08-04T11:06:10Z","updated_at":"2026-11-03T03:07:49.454544Z"}],"ghsa":[{"id":"GHSA-6566-9526-52v6","title":"Exposure of Sensitive Information to an Unauthorized Actor in Concord","description":"An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host information, nodes, API metadata, and references to usernames via api/v1/apikey.","status":"published","published":"2022-02-10T20:48:47Z","modified":"2025-01-17T13:11:03Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:38:27.067633Z"}],"nvd":[{"id":"CVE-2020-10591","description":"An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host information, nodes, API metadata, and references to usernames via api/v1/apikey.","status":"published","published":"2020-03-15T21:15:11.88Z","modified":"2026-06-17T02:48:03.443Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:05:55.32877Z"}],"osv":[{"id":"CVE-2020-10591","description":"An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host information, nodes, API metadata, and references to usernames via api/v1/apikey.","status":"published","published":"2020-03-15T21:15:11.88Z","modified":"2026-10-20T10:51:38.968575966Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:13.492058Z"},{"id":"GHSA-6566-9526-52v6","title":"Exposure of Sensitive Information to an Unauthorized Actor in Concord","description":"An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host information, nodes, API metadata, and references to usernames via api/v1/apikey.","status":"published","published":"2022-02-10T20:48:47Z","modified":"2025-01-17T13:38:29.62807Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:46:39.266402Z"}]}}