CVE-2026-34183: Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler

Overview

Severity

High (CVSS 7.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-06-13

Last Updated

2026-06-23

EPSS Score

1.05% (percentile: 60.7%)

Affected Products (5)

Open Source Software

• azl3 cloud-hypervisor 51.1.56-1 on Azure Linux 3.0
• azl3 nodejs 24.14.1-3 on Azure Linux 3.0
• azl3 openssl 3.3.5-5 on Azure Linux 3.0
• azl3 rust 1.75.0-29 on Azure Linux 3.0
• azl3 rust 1.90.0-8 on Azure Linux 3.0

Revision History

• 2026-06-13: Information published.
• 2026-06-20: Information published.
• 2026-06-23: Information published.