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CVE-2026-67404

CVE-2026-67404 · RabbitMQ: OAuth2 silent verify_none fallback for JWKS fetch

This page contains facts from public vulnerability sources. Check the original advisory before updating.

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, When no CA bundle is available, ssl_options/1 falls back to [{verify, verify_none}] with no warning. An attacker in a man-in-the-middle position can forge the JWKS response, which leads the broker to accept arbitrary JWTs. Preconditions include The OAuth2 plugin must be in use with no cacertfile configured and the OS CA bundle empty or unreadable (for example, in a minimal container), and the attacker must hold a network man-in-the-middle position.. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0.

CVSS 9.2 · Critical · EPSS 0.2% · Fix available

Published
Updated

Stack: system · database

Affected products and versions

  • rabbitmq

    Versions
    • >= 3.13.0, < 3.13.15: Affected
    • >= 4.0.0, < 4.0.20: Affected
    • >= 4.1.0, < 4.1.11: Affected
    • >= 4.2.0, < 4.2.6: Affected

    No fix published

  • rabbitmq-server Debian:12

    Versions
    • 3.10.8-1.1
    • 3.10.8-1.1+deb12u1
    • 3.10.8-2
    • 3.10.8-3
    • 3.10.8-4
    • 3.12.1-1
    • 3.12.1-1.1
    • 4.0.5-1
    • 4.0.5-10
    • 4.0.5-11
    • 4.0.5-12
    • 4.0.5-13
    • 4.0.5-14
    • 4.0.5-2
    • 4.0.5-3
    • 4.0.5-4
    • 4.0.5-5
    • 4.0.5-6
    • 4.0.5-8
    • 4.0.5-9
    • 4.3.0-1
    • 4.3.0-2
    • 4.3.0-3
    • 4.3.2-1
    • 4.3.2-2
    • 4.3.2-3
    • 4.3.2-4
    • 4.3.2-5
    • 4.3.6-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rabbitmq-server Debian:13

    Versions
    • 4.0.5-10
    • 4.0.5-11
    • 4.0.5-12
    • 4.0.5-13
    • 4.0.5-14
    • 4.0.5-6
    • 4.0.5-6+deb13u1
    • 4.0.5-6+deb13u2
    • 4.0.5-8
    • 4.0.5-9
    • 4.3.0-1
    • 4.3.0-2
    • 4.3.0-3
    • 4.3.2-1
    • 4.3.2-2
    • 4.3.2-3
    • 4.3.2-4
    • 4.3.2-5
    • 4.3.6-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • rabbitmq-server Debian:14

    Versions
    • 4.0.5-10
    • 4.0.5-11
    • 4.0.5-12
    • 4.0.5-13
    • 4.0.5-14
    • 4.0.5-6
    • 4.0.5-8
    • 4.0.5-9
    • 4.3.0-1
    Affected ranges
    • ECOSYSTEM: < 4.3.0-2

    Update to 4.3.0-2

  • rabbitmq-server Ubuntu:Pro:16.04:LTS

    Versions
    • 3.5.4-1
    • 3.5.4-3
    • 3.5.4-3.1
    • 3.5.7-1
    • 3.5.7-1ubuntu0.16.04.1
    • 3.5.7-1ubuntu0.16.04.2
    • 3.5.7-1ubuntu0.16.04.4
    • 3.5.7-1ubuntu0.16.04.4+esm1
    • 3.5.7-1ubuntu0.16.04.4+esm2
    Affected ranges
    • ECOSYSTEM: < 3.5.7-1ubuntu0.16.04.4+esm3

    Update to 3.5.7-1ubuntu0.16.04.4+esm3

  • rabbitmq-server Ubuntu:Pro:18.04:LTS

    Versions
    • 3.6.10-1
    • 3.6.10-1ubuntu0.1
    • 3.6.10-1ubuntu0.3
    • 3.6.10-1ubuntu0.4
    • 3.6.10-1ubuntu0.5
    Affected ranges
    • ECOSYSTEM: < 3.6.10-1ubuntu0.5+esm1

    Update to 3.6.10-1ubuntu0.5+esm1

  • rabbitmq-server Ubuntu:Pro:20.04:LTS

    Versions
    • 3.7.8-4ubuntu2
    • 3.7.18-1
    • 3.8.2-0ubuntu1
    • 3.8.2-0ubuntu1.1
    • 3.8.2-0ubuntu1.2
    • 3.8.2-0ubuntu1.3
    • 3.8.2-0ubuntu1.4
    • 3.8.2-0ubuntu1.5
    • 3.8.3-0ubuntu0.1
    • 3.8.3-0ubuntu0.2
    • 3.8.3-0ubuntu0.3
    • 3.8.3-0ubuntu0.3+esm1
    Affected ranges
    • ECOSYSTEM: < 3.8.3-0ubuntu0.3+esm2

    Update to 3.8.3-0ubuntu0.3+esm2

  • rabbitmq-server Ubuntu:22.04:LTS

    Versions
    • 3.8.9-3ubuntu1
    • 3.9.8-1
    • 3.9.8-2
    • 3.9.8-3
    • 3.9.8-5
    • 3.9.8-6
    • 3.9.13-1
    • 3.9.13-1ubuntu0.22.04.1
    • 3.9.13-1ubuntu0.22.04.2
    • 3.9.27-0ubuntu0.1
    • 3.9.27-0ubuntu0.2
    • 3.9.27-0ubuntu0.5
    Affected ranges
    • ECOSYSTEM: < 3.9.27-0ubuntu0.6

    Update to 3.9.27-0ubuntu0.6

  • rabbitmq-server Ubuntu:24.04:LTS

    Versions
    • 3.12.1-1
    • 3.12.1-1ubuntu1
    • 3.12.1-1ubuntu1.2
    • 3.12.1-1ubuntu1.4
    • 3.12.1-1ubuntu1.6
    Affected ranges
    • ECOSYSTEM: < 3.12.1-1ubuntu1.7

    Update to 3.12.1-1ubuntu1.7

  • rabbitmq-server Ubuntu:26.04:LTS

    Versions
    • 4.0.5-8ubuntu2
    • 4.0.5-10ubuntu1
    • 4.0.5-10ubuntu2
    • 4.0.5-10ubuntu3
    • 4.0.5-10ubuntu4
    • 4.0.5-10ubuntu5
    • 4.0.5-10ubuntu5.1
    Affected ranges
    • ECOSYSTEM: < 4.0.5-10ubuntu5.2

    Update to 4.0.5-10ubuntu5.2

Original sources

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