CVE-2026-43969: Cookie Request Header Injection via Unvalidated Encoder in cow_cookie:cookie/1

Overview

Severity

Low (CVSS 3.2)

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Exploit Status

Not Exploited

Patch Tuesday

2026-May

Released

2026-05-15

Last Updated

2026-08-07

EPSS Score

0.14% (percentile: 4.3%)

Affected Products (4)

Open Source Software

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

Other

• 21394-17084
• 21487-17084
• 21657-17084

Revision History

• 2026-05-15: Information published.
• 2026-06-03: Information published.
• 2026-06-28: Information published.
• 2026-08-07: Information published.