CVE-2026-27135: nghttp2 Denial of service: Assertion failure due to the missing state validation

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-Mar

Released

2026-03-20

EPSS Score

0.01% (percentile: 1.9%)

Affected Products (1)

Other

• 20318-17084

Revision History

• 2026-03-20: Information published.