{"id":"CVE-2020-26174","aliases":["EUVD-2020-18799","GHSA-g862-hhr5-33gv"],"status":"published","title":"tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the server and...","description":"tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the server and restricts uploads to the filetypes contained in this list. However, this restriction is enforced in the browser (client-side) and can be circumvented. This allows an attacker to upload any file as an attachment to a workitem.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:U/UI:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01249,"percentile":0.69616,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2020-12-18T09:27:18Z","modified":"2026-06-17T03:07:45Z","products":[{"vendor":"tangro","product":"business_workflow"}],"references":[{"url":"https://www.tangro.de/","tags":["x_refsource_MISC","x_transferred","Product"]},{"url":"https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26174"},{"url":"https://github.com/advisories/GHSA-g862-hhr5-33gv"}],"sources":{"cve":[{"id":"CVE-2020-26174","description":"tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the server and restricts uploads to the filetypes contained in this list. However, this restriction is enforced in the browser (client-side) and can be circumvented. This allows an attacker to upload any file as an attachment to a workitem.","status":"published","published":"2020-12-18T09:27:18Z","modified":"2024-08-04T15:49:07.156Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:U/UI:N","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:35:45.763329Z"}],"euvd":[{"id":"EUVD-2020-18799","description":"tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the server and restricts uploads to the filetypes contained in this list. However, this restriction is enforced in the browser (client-side) and can be circumvented. This allows an attacker to upload any file as an attachment to a workitem.","status":"published","published":"2020-12-18T09:27:18Z","modified":"2024-08-04T15:49:07Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:U/UI:N","level":"high"}],"updated_at":"2026-11-03T03:07:15.778249Z"}],"ghsa":[{"id":"GHSA-g862-hhr5-33gv","title":"tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the server and...","description":"tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the server and restricts uploads to the filetypes contained in this list. However, this restriction is enforced in the browser (client-side) and can be circumvented. This allows an attacker to upload any file as an attachment to a workitem.","status":"published","published":"2022-05-24T17:36:53Z","modified":"2023-01-29T05:05:46Z","cwes":["CWE-434"],"updated_at":"2026-11-02T14:45:52.34362Z"}],"nvd":[{"id":"CVE-2020-26174","description":"tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the server and restricts uploads to the filetypes contained in this list. However, this restriction is enforced in the browser (client-side) and can be circumvented. This allows an attacker to upload any file as an attachment to a workitem.","status":"published","published":"2020-12-18T10:15:12.917Z","modified":"2026-06-17T03:07:45.337Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/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-434"],"updated_at":"2026-11-02T14:06:27.73474Z"}]}}