CVE-2026-8466: Unbounded buffer accumulation in multipart header parsing causes denial of service in cowboy

Overview

Severity

N/A

Exploit Status

Not Exploited

Patch Tuesday

2026-May

Released

2026-05-27

Last Updated

2026-06-03

EPSS Score

0.38% (percentile: 31.0%)

Affected Products (2)

Open Source Software

• azl3 rabbitmq-server 3.13.7-3 on Azure Linux 3.0

Other

• 21394-17084

Revision History

• 2026-05-27: Information published.
• 2026-05-27: Information published.
• 2026-05-30: Information published.
• 2026-06-03: Information published.