CVE-2018-12939: Seeddms

Medium severity, CVSS 6.5. EPSS: 2% chance of exploitation in the next 30 days.

A directory traversal flaw in SeedDMS (formerly LetoDMS and MyDMS) before 5.1.8 allows an authenticated attacker to write to (or potentially delete) arbitrary files via a .. (dot dot) in the "op/op.UploadChunks.php" "qquuid" parameter. NOTE: this can be leveraged to execute arbitrary code by using CVE-2018-12940.

Affected products

• Seeddms Seeddms: before 5.1.8 (fixed in 5.1.8)

Published 2018-07-31. Last modified 2026-06-17.