Is CVE-2026-67236 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-67236 being exploited in the wild.

How severe is CVE-2026-67236?

Informational severity, published 25 September 2026.

Which products and versions are affected?

VMware RabbitMQ 4.2.0 to 4.2.7, 4.3.0 to 4.3.1.

Is there a fix for CVE-2026-67236?

A patch was published on 2026-09-25: Fixed in versions 4.2.8 and 4.3.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-67236 attacked?

It is attacked over the network or with local access or from the adjacent network, in a hosted service.

Am I affected by CVE-2026-67236?

Check whether you run VMware RabbitMQ at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-67236: RabbitMQ insecure authentication cookie in management console

CVE-2026-67236 · Severity: info · Published 2026-09-25

RabbitMQ's management console stores login credentials in browser cookies without proper security protections. An attacker with access to the network, the browser, or through a cross-site scripting vulnerability can retrieve and decode the base64-encoded credentials to gain administrative access to the messaging broker.

Technologies: VMware RabbitMQ. Vendors: VMware.

Quick answers

Is CVE-2026-67236 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-67236 being exploited in the wild.
How severe is CVE-2026-67236?: Informational severity, published 25 September 2026.
Which products and versions are affected?: VMware RabbitMQ 4.2.0 to 4.2.7, 4.3.0 to 4.3.1.
Is there a fix for CVE-2026-67236?: A patch was published on 2026-09-25: Fixed in versions 4.2.8 and 4.3.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-67236 attacked?: It is attacked over the network or with local access or from the adjacent network, in a hosted service.
Am I affected by CVE-2026-67236?: Check whether you run VMware RabbitMQ at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The POST /login endpoint in RabbitMQ's management console sets an authentication cookie containing base64-encoded username:password pairs without HttpOnly, Secure, SameSite, or expiration attributes. Base64 encoding provides no encryption protection, allowing attackers with same-origin XSS, network eavesdropping capability, or local browser cookie store access to recover plaintext credentials. Fixes applied in 4.2.8 and 4.3.2 remove the insecure cookie.

Affected products

VMware RabbitMQ 4.2.0 to 4.2.7, 4.3.0 to 4.3.1

Timeline

2026-09-25: disclosed
2026-09-25: patched: Fixed in versions 4.2.8 and 4.3.2

References

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