CVE-2026-55204: HAProxy - NULL Pointer Dereference in hpack_dht_insert Function

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

2026-06-27

Last Updated

2026-07-01

EPSS Score

0.48% (percentile: 39.4%)

Affected Products (2)

Other

• 21468-17084
• 21525-17084

Revision History

• 2026-06-27: Information published.
• 2026-06-30: Information published.
• 2026-07-01: Information published.