CVE-2018-20819: Dropbox Lepton

High severity, CVSS 7.8. EPSS: 1% chance of exploitation in the next 30 days.

io/ZlibCompression.cc in the decompression component in Dropbox Lepton 1.2.1 allows attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact by crafting a jpg image file. The root cause is a missing check of header payloads that may be (incorrectly) larger than the maximum file size.

Affected products

• Dropbox Lepton: version 1.2.1 only

Published 2019-04-23. Last modified 2026-06-17.