{"id":"CVE-2026-50873","aliases":["EUVD-2026-36771","GHSA-wv29-ggqw-p97w"],"status":"published","title":"An arbitrary file upload vulnerability in the attachment handling component of flatnotes v5.5.4...","description":"An arbitrary file upload vulnerability in the attachment handling component of flatnotes v5.5.4 allows attackers to execute arbitrary code via uploading a crafted HTML or SVG file.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00441,"percentile":0.38626,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2026-06-15T00:00:00Z","modified":"2026-06-17T10:57:47Z","references":[{"url":"https://gist.github.com/pyuysig/ab0af5b10877fb906941e05a69b202a7","tags":["exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50873"},{"url":"https://github.com/advisories/GHSA-wv29-ggqw-p97w"}],"sources":{"cve":[{"id":"CVE-2026-50873","description":"An arbitrary file upload vulnerability in the attachment handling component of flatnotes v5.5.4 allows attackers to execute arbitrary code via uploading a crafted HTML or SVG file.","status":"published","published":"2026-06-15T00:00:00Z","modified":"2026-06-16T13:06:01.196Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:20:09.098623Z"}],"euvd":[{"id":"EUVD-2026-36771","description":"An arbitrary file upload vulnerability in the attachment handling component of flatnotes v5.5.4 allows attackers to execute arbitrary code via uploading a crafted HTML or SVG file.","status":"published","published":"2026-06-15T00:00:00Z","modified":"2026-06-16T13:06:01Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:20:40.605509Z"}],"ghsa":[{"id":"GHSA-wv29-ggqw-p97w","title":"An arbitrary file upload vulnerability in the attachment handling component of flatnotes v5.5.4...","description":"An arbitrary file upload vulnerability in the attachment handling component of flatnotes v5.5.4 allows attackers to execute arbitrary code via uploading a crafted HTML or SVG file.","status":"published","published":"2026-06-15T21:30:40Z","modified":"2026-06-16T15:34:53Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T15:08:48.835344Z"}],"nvd":[{"id":"CVE-2026-50873","description":"An arbitrary file upload vulnerability in the attachment handling component of flatnotes v5.5.4 allows attackers to execute arbitrary code via uploading a crafted HTML or SVG file.","status":"published","published":"2026-06-15T20:16:30.097Z","modified":"2026-06-17T10:57:47.213Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:12:23.846948Z"}]}}