CVE-2026-93336Missing authorization in the unit resources download route in Juju controllers

Description

Missing authorization in the unit resources download route in Canonical Juju 4.0 through 4.0.15 allows a controller-authenticated principal (a unit agent, or a user with only login permission) to read any application's charm resource in any model,  including container-registry credentials, via a crafted request naming an arbitrary unit.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/juju/juju/security/advisories/GHSA-fp7x-6hq5-3c3w vendor-advisory
• https://github.com/juju/juju/pull/23360 patch