USN-8422-1: Mistral vulnerability

Published Jun 11, 2026
·
Updated

Eduardo Gonzalez Gutierrez and Arnaud Morin discovered that Mistral did not properly enforce access policies on some API endpoints. An attacker could possibly execute arbitrary code on a Mistral worker and possibly extract sensitive data including service credentials from it.

Affected Software

49 affected componentsFixes available
ubuntu/mistral
All of the following
ubuntu/mistral-api<22.0.0-0ubuntu1.1
22.0.0-0ubuntu1.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/mistral-common<22.0.0-0ubuntu1.1
22.0.0-0ubuntu1.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/mistral-engine<22.0.0-0ubuntu1.1
22.0.0-0ubuntu1.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/mistral-event-engine<22.0.0-0ubuntu1.1
22.0.0-0ubuntu1.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/mistral-executor<22.0.0-0ubuntu1.1
22.0.0-0ubuntu1.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/python3-mistral<22.0.0-0ubuntu1.1
22.0.0-0ubuntu1.1
Ubuntu Ubuntu=26.04
All of the following
ubuntu/mistral-api<21.0.0-0ubuntu1.1
21.0.0-0ubuntu1.1
Ubuntu Ubuntu=25.10
All of the following
ubuntu/mistral-common<21.0.0-0ubuntu1.1
21.0.0-0ubuntu1.1
Ubuntu Ubuntu=25.10
All of the following
ubuntu/mistral-engine<21.0.0-0ubuntu1.1
21.0.0-0ubuntu1.1
Ubuntu Ubuntu=25.10
All of the following
ubuntu/mistral-event-engine<21.0.0-0ubuntu1.1
21.0.0-0ubuntu1.1
Ubuntu Ubuntu=25.10
All of the following
ubuntu/mistral-executor<21.0.0-0ubuntu1.1
21.0.0-0ubuntu1.1
Ubuntu Ubuntu=25.10
All of the following
ubuntu/python3-mistral<21.0.0-0ubuntu1.1
21.0.0-0ubuntu1.1
Ubuntu Ubuntu=25.10
All of the following
ubuntu/mistral-api<18.0.1-0ubuntu1.1
18.0.1-0ubuntu1.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/mistral-common<18.0.1-0ubuntu1.1
18.0.1-0ubuntu1.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/mistral-engine<18.0.1-0ubuntu1.1
18.0.1-0ubuntu1.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/mistral-event-engine<18.0.1-0ubuntu1.1
18.0.1-0ubuntu1.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/mistral-executor<18.0.1-0ubuntu1.1
18.0.1-0ubuntu1.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/python3-mistral<18.0.1-0ubuntu1.1
18.0.1-0ubuntu1.1
Ubuntu Ubuntu=24.04
All of the following
ubuntu/mistral-api<14.0.0-0ubuntu1.1
14.0.0-0ubuntu1.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/mistral-common<14.0.0-0ubuntu1.1
14.0.0-0ubuntu1.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/mistral-engine<14.0.0-0ubuntu1.1
14.0.0-0ubuntu1.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/mistral-event-engine<14.0.0-0ubuntu1.1
14.0.0-0ubuntu1.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/mistral-executor<14.0.0-0ubuntu1.1
14.0.0-0ubuntu1.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/python3-mistral<14.0.0-0ubuntu1.1
14.0.0-0ubuntu1.1
Ubuntu Ubuntu=22.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/mistral-api to a version that resolves this vulnerability.

    Fixed in 22.0.0-0ubuntu1.1
  2. Upgrade

    Upgrade ubuntu/mistral-common to a version that resolves this vulnerability.

    Fixed in 22.0.0-0ubuntu1.1
  3. Upgrade

    Upgrade ubuntu/mistral-engine to a version that resolves this vulnerability.

    Fixed in 22.0.0-0ubuntu1.1
  4. Upgrade

    Upgrade ubuntu/mistral-event-engine to a version that resolves this vulnerability.

    Fixed in 22.0.0-0ubuntu1.1
  5. Upgrade

    Upgrade ubuntu/mistral-executor to a version that resolves this vulnerability.

    Fixed in 22.0.0-0ubuntu1.1
  6. Upgrade

    Upgrade ubuntu/python3-mistral to a version that resolves this vulnerability.

    Fixed in 22.0.0-0ubuntu1.1
  7. Upgrade

    Upgrade ubuntu/mistral-api to a version that resolves this vulnerability.

    Fixed in 21.0.0-0ubuntu1.1
  8. Upgrade

    Upgrade ubuntu/mistral-common to a version that resolves this vulnerability.

    Fixed in 21.0.0-0ubuntu1.1
  9. Upgrade

    Upgrade ubuntu/mistral-engine to a version that resolves this vulnerability.

    Fixed in 21.0.0-0ubuntu1.1
  10. Upgrade

    Upgrade ubuntu/mistral-event-engine to a version that resolves this vulnerability.

    Fixed in 21.0.0-0ubuntu1.1
  11. Upgrade

    Upgrade ubuntu/mistral-executor to a version that resolves this vulnerability.

    Fixed in 21.0.0-0ubuntu1.1
  12. Upgrade

    Upgrade ubuntu/python3-mistral to a version that resolves this vulnerability.

    Fixed in 21.0.0-0ubuntu1.1
  13. Upgrade

    Upgrade ubuntu/mistral-api to a version that resolves this vulnerability.

    Fixed in 18.0.1-0ubuntu1.1
  14. Upgrade

    Upgrade ubuntu/mistral-common to a version that resolves this vulnerability.

    Fixed in 18.0.1-0ubuntu1.1
  15. Upgrade

    Upgrade ubuntu/mistral-engine to a version that resolves this vulnerability.

    Fixed in 18.0.1-0ubuntu1.1
  16. Upgrade

    Upgrade ubuntu/mistral-event-engine to a version that resolves this vulnerability.

    Fixed in 18.0.1-0ubuntu1.1
  17. Upgrade

    Upgrade ubuntu/mistral-executor to a version that resolves this vulnerability.

    Fixed in 18.0.1-0ubuntu1.1
  18. Upgrade

    Upgrade ubuntu/python3-mistral to a version that resolves this vulnerability.

    Fixed in 18.0.1-0ubuntu1.1
  19. Upgrade

    Upgrade ubuntu/mistral-api to a version that resolves this vulnerability.

    Fixed in 14.0.0-0ubuntu1.1
  20. Upgrade

    Upgrade ubuntu/mistral-common to a version that resolves this vulnerability.

    Fixed in 14.0.0-0ubuntu1.1
  21. Upgrade

    Upgrade ubuntu/mistral-engine to a version that resolves this vulnerability.

    Fixed in 14.0.0-0ubuntu1.1
  22. Upgrade

    Upgrade ubuntu/mistral-event-engine to a version that resolves this vulnerability.

    Fixed in 14.0.0-0ubuntu1.1
  23. Upgrade

    Upgrade ubuntu/mistral-executor to a version that resolves this vulnerability.

    Fixed in 14.0.0-0ubuntu1.1
  24. Upgrade

    Upgrade ubuntu/python3-mistral to a version that resolves this vulnerability.

    Fixed in 14.0.0-0ubuntu1.1

Event History

Jun 11, 2026
Advisory Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Company

Resources

Contact

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