CVE-2026-93336: CWE-862 Missing Authorization in Canonical Juju
Description
CVE-2026-93336 is a missing authorization vulnerability in Canonical Juju versions 4.0 through 4.0.15. It allows a controller-authenticated principal, such as a unit agent or a user with only login permission, to read any application's charm resource across any model. This includes sensitive data like container-registry credentials, accessible via a crafted request specifying an arbitrary unit.
CVSS v4.0
Score 7.1high
Affected software
Canonical
Juju
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-862) in Canonical Juju affects the unit resources download route, where insufficient authorization checks permit a controller-authenticated principal to access charm resources from any model. The flaw exists in Juju versions from 4.0 up to but not including 4.0.16. Exploitation requires authentication with controller-level access but can be performed by principals with limited permissions (login-only). The vulnerability allows reading sensitive application charm resources, including container-registry credentials, by crafting requests naming arbitrary units.
Potential Impact
An attacker with controller authentication but limited permissions can read sensitive charm resources from any model, potentially exposing container-registry credentials. This unauthorized access could lead to further compromise of container images or deployment environments. The vulnerability does not allow privilege escalation or code execution directly but exposes critical secrets.
Mitigation Recommendations
A fix is available in Juju version 4.0.16. Users should upgrade to version 4.0.16 or later to remediate this vulnerability. No vendor advisory content was provided to indicate alternative mitigations or temporary workarounds.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- canonical
- Date Reserved
- 2026-09-17T18:37:26.952Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ada4bef4d27ba8daa6ca6fb
Added to database: 10/22/2026, 17:46:23 UTC
Last enriched: 10/22/2026, 18:00:23 UTC
Last updated: 10/22/2026, 18:01:31 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.