CVE-2026-36760

Critical severity, CVSS 9.6. EPSS: 0.6% chance of exploitation in the next 30 days.

An issue in the fileMd5 parameter in the /a/file/upload endpoint of JeeSite v5.15.1 allows authenticated attackers with file upload permissions to execute a path traversal and write arbitrary files with whitelisted suffixes to arbitrary filesystem locations while chunked upload is enabled.

Published 2026-04-30. Last modified 2026-06-17.