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CVE-2026-33540

Опубликовано: 06 апр. 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 7.5

Описание

Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used without validating that it matches the upstream registry host. As a result, an attacker-controlled upstream (or an attacker with MitM position to the upstream) can cause distribution to send the configured upstream credentials via basic auth to an attacker-controlled realm URL. This vulnerability is fixed in 3.1.0.

РелизСтатусПримечание
devel

needs-triage

esm-apps-legacy/xenial

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

esm-apps/xenial

ignored

end of ESM support, was needs-triage
jammy

needs-triage

noble

needs-triage

Показывать по

EPSS

Процентиль: 20%
0.00274
Низкий

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 3.1
redhat
4 месяца назад

Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used without validating that it matches the upstream registry host. As a result, an attacker-controlled upstream (or an attacker with MitM position to the upstream) can cause distribution to send the configured upstream credentials via basic auth to an attacker-controlled realm URL. This vulnerability is fixed in 3.1.0.

CVSS3: 7.5
nvd
4 месяца назад

Distribution is a toolkit to pack, ship, store, and deliver container content. Prior to 3.1.0, in pull-through cache mode, distribution discovers token auth endpoints by parsing WWW-Authenticate challenges returned by the configured upstream registry. The realm URL from a bearer challenge is used without validating that it matches the upstream registry host. As a result, an attacker-controlled upstream (or an attacker with MitM position to the upstream) can cause distribution to send the configured upstream credentials via basic auth to an attacker-controlled realm URL. This vulnerability is fixed in 3.1.0.

CVSS3: 7.5
debian
4 месяца назад

Distribution is a toolkit to pack, ship, store, and deliver container ...

CVSS3: 7.5
github
4 месяца назад

Distribution affected by pull-through cache credential exfiltration via www-authenticate bearer realm

CVSS3: 7.5
fstec
4 месяца назад

Уязвимость инструментария для хранения и доставки содержимого контейнеров Distribution, связанная с недостаточной проверкой запросов на стороне сервера, позволяющая нарушителю осуществить SSRF-атаку

EPSS

Процентиль: 20%
0.00274
Низкий

7.5 High

CVSS3