{"id":"CVE-2026-45225","summary":"Heym \u003c 0.0.21 Path Traversal File Upload via upload_file()","details":"Heym before 0.0.21 contains a path traversal vulnerability in the file upload endpoint that allows authenticated users to write attacker-controlled files to arbitrary locations by supplying a crafted filename with traversal sequences. Attackers can exploit the unvalidated filename parameter in the upload_file() handler to bypass path restrictions and write, read, or delete files outside the intended storage directory.","modified":"2026-07-08T08:02:47.285566808Z","published":"2026-05-12T21:09:28.287Z","database_specific":{"cwe_ids":["CWE-22"],"cna_assigner":"VulnCheck","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45225.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45225.json"},{"type":"ADVISORY","url":"https://github.com/heymrun/heym/releases/tag/v0.0.21"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45225"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/heym-path-traversal-file-upload-via-upload-file"},{"type":"REPORT","url":"https://github.com/heymrun/heym/pull/92"},{"type":"FIX","url":"https://github.com/heymrun/heym/commit/835843e6d2bf7d018cbb8e50f28f0426eaa20c84"},{"type":"PACKAGE","url":"https://github.com/heymrun/heym"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/heymrun/heym","events":[{"introduced":"0"},{"fixed":"fdd6fd6cca8fb10a25608011a7695fa91093e7ee"},{"fixed":"835843e6d2bf7d018cbb8e50f28f0426eaa20c84"}],"database_specific":{"source":["DESCRIPTION","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"0.0.21"}]}}],"versions":["v0.0.20","v0.0.19","v0.0.18","v0.0.17","v0.0.16","v0.0.15","v0.0.14","v0.0.13","v0.0.12","v0.0.11","v0.0.10","v0.0.9","v0.0.8","v0.0.7","v0.0.6","v0.0.5","v0.0.4","v0.0.3","v0.0.2","v0.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45225.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N"}]}