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CVE-2026-71554

Опубликовано: 06 авг. 2026
Источник: ubuntu
Приоритет: medium
CVSS3: 5.3

Описание

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Versions up to and including 4.4.0 accept request header blocks containing more than one Host header, and forward every Host header to the consuming application. Where the consumer downgrades HTTP/2 to HTTP/1.1, the resulting request carries two Host header lines, providing a request smuggling primitive. This issue is fixed in version 4.4.1.

РелизСтатусПримечание
devel

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

needs-triage

esm-apps/jammy

needs-triage

esm-apps/noble

needs-triage

esm-apps/resolute

needs-triage

jammy

needs-triage

noble

needs-triage

resolute

needs-triage

upstream

needs-triage

Показывать по

5.3 Medium

CVSS3

Связанные уязвимости

CVSS3: 5.3
nvd
25 дней назад

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Versions up to and including 4.4.0 accept request header blocks containing more than one Host header, and forward every Host header to the consuming application. Where the consumer downgrades HTTP/2 to HTTP/1.1, the resulting request carries two Host header lines, providing a request smuggling primitive. This issue is fixed in version 4.4.1.

CVSS3: 5.3
debian
25 дней назад

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Version ...

CVSS3: 5.3
github
25 дней назад

h2: Duplicate Host header could facilitate request smuggling

5.3 Medium

CVSS3