Public vulnerability disclosure

CVE-2026-93336

Missing authorization in the unit resources download route in Juju controllers

publishedCWE-862

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.

Investigate in Cyber JSON Markdown

Technical severity7.1 highCVSS 4.0 · CNA: canonical

Published2026-10-22Source updated 2026-11-02

Collected2026-11-022 attributed sources

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
Juju Canonical `juju` https://canonical.com/juju Platforms: Linux	≥ 4.0; < 4.0.16 (affected, semver) Other versions: unaffected	CNA: canonical

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
4.0 / 7.1 high	`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N`	CNA: canonical

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

https://github.com/juju/juju/security/advisories/GHSA-fp7x-6hq5-3c3wCNA: canonical · vendor-advisory
https://github.com/juju/juju/pull/23360CNA: canonical · patch