{"id":"CVE-2026-63502","title":"Yeti: Path traversal in ExportTask name allows authenticated arbitrary file read and write","summary":"Yeti bridges the gap between CTI and DFIR practitioners by providing a Forensics Intelligence platform and pipeline. Prior to 2.5.1, YETI derives ExportTask.file_name from the user-controlled task name and passes it to core/clients/file_…","severity":"high","cvss":8.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","cvssSource":"cna","cwe":["CWE-22"],"vendor":"yeti-platform","product":"yeti","affected":["yeti <= 2.5.0"],"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T19:36:06.607Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-63502","references":[{"url":"https://github.com/yeti-platform/yeti/security/advisories/GHSA-4q3w-w2g5-8wqq","label":"https://github.com/yeti-platform/yeti/security/advisories/GHSA-4q3w-w2g5-8wqq"},{"url":"https://github.com/yeti-platform/yeti/pull/1280","label":"https://github.com/yeti-platform/yeti/pull/1280"},{"url":"https://github.com/yeti-platform/yeti/commit/bfd7c2424dc05dea2d46b5b106b5071f959d5d5a","label":"https://github.com/yeti-platform/yeti/commit/bfd7c2424dc05dea2d46b5b106b5071f959d5d5a"},{"url":"https://github.com/yeti-platform/yeti/releases/tag/2.5.1","label":"https://github.com/yeti-platform/yeti/releases/tag/2.5.1"}],"tags":["cve.org"],"epss":0.00412,"epssPercentile":0.35672,"ingestedAt":"2026-11-05T20:33:06.398Z","slug":"CVE-2026-63502","body":"## Overview\n\nYeti bridges the gap between CTI and DFIR practitioners by providing a Forensics Intelligence platform and pipeline. Prior to 2.5.1, YETI derives ExportTask.file_name from the user-controlled task name and passes it to core/clients/file_storage/classes/local_storage.py without sanitizing traversal sequences or enforcing path confinement. A low-privileged authenticated user using the default local storage backend can call POST /api/v2/tasks/export/new with a traversal name and use ExportTask.file_contents through GET /api/v2/tasks/export/{export_id}/content to read files accessible to the YETI service account. Running ExportTask.run() can also write attacker-controlled export output to an attacker-selected writable path. The impact depends on the service account's filesystem permissions, and universal code execution is not established. This issue is fixed in version 2.5.1.\n\n## Affected\n\n- `yeti <= 2.5.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":45.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}