CVE-2020-21526: Halo

Critical severity, CVSS 9.8. EPSS: 1.9% chance of exploitation in the next 30 days.

An Arbitrary file writing vulnerability in halo v1.1.3. In an interface to write files in the background, a directory traversal check is performed on the input path parameter, but the startsWith function can be used to bypass it.

Affected products

• Halo Halo: version 1.1.3 only

Published 2020-09-30. Last modified 2026-06-17.