CVE-2020-29565: Debian Linux

Medium severity, CVSS 6.1. EPSS: 1.4% chance of exploitation in the next 30 days.

An issue was discovered in OpenStack Horizon before 15.3.2, 16.x before 16.2.1, 17.x and 18.x before 18.3.3, 18.4.x, and 18.5.x. There is a lack of validation of the "next" parameter, which would allow someone to supply a malicious URL in Horizon that can cause an automatic redirect to the provided malicious URL.

Affected products

• Debian Debian Linux: version 10.0 only
• Openstack Horizon: from 15.3.0, before 15.3.2 (fixed in 15.3.2); from 16.0.0, before 16.2.1 (fixed in 16.2.1); from 17.0.0, before 18.3.3 (fixed in 18.3.3); from 18.4.0, up to and including 18.5.0

Published 2020-12-04. Last modified 2026-06-17.