{"id":"CVE-2026-51859","published":"2026-09-30T21:17:11.893","lastModified":"2026-10-01T19:17:20.790","description":"bisheng 2.3.0, 2.4.0, and 2.4.0-beta1 is vulnerable to directory traversal in save_download_file (src/backend/bisheng/core/cache/utils.py:290).","cvssScore":9.1,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cwes":["CWE-22"],"vendors":[],"products":[],"references":[{"url":"https://gist.github.com/Ro1ME/df160925a60dd917550f7c87bfe62519","tags":[]},{"url":"https://github.com/dataelement/bisheng/issues/1994","tags":[]},{"url":"https://github.com/dataelement/bisheng/issues/1994","tags":[]}],"exploitRefs":[{"url":"https://gist.github.com/Ro1ME/df160925a60dd917550f7c87bfe62519","tags":[]},{"url":"https://github.com/dataelement/bisheng/issues/1994","tags":[]},{"url":"https://github.com/dataelement/bisheng/issues/1994","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows directory traversal, enabling attackers to access sensitive files. This matters because it can lead to data exposure and compromise.","exploitability":"Exploitation is moderate to hard, requiring knowledge of the exact directory path and potential access to the affected endpoint.","blast_radius":"If exploited, the impact is limited to the local file system, potentially leading to data leakage but not affecting network availability or remote systems.","remediation":"Upgrade to bisheng 2.5.0 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["directory-traversal","data-leakage","web"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-02T08:46:44.309Z"}}