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CVE-2026-5545

Опубликовано: 13 мая 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 6.5

Описание

libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTP(S) request after a Negotiate-authenticated one, when both use the same host. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different credentials. An application that first uses Negotiate authentication to a server with user1:password1 and then does another operation to the same server asking for any authentication method but for user2:password2 (while the previous connection is still alive) - the second request gets confused and wrongly reuses the same connection and sends the new request over that connection thinking it uses a mix of user1's and user2's credentials when ...

РелизСтатусПримечание
devel

pending

8.18.0-1ubuntu2.1
esm-infra-legacy/trusty

needed

esm-infra-legacy/xenial

needed

esm-infra/bionic

needed

esm-infra/focal

needed

esm-infra/xenial

ignored

end of ESM support, was needed
jammy

released

7.81.0-1ubuntu1.24
noble

released

8.5.0-2ubuntu10.9
questing

released

8.14.1-2ubuntu1.3
resolute

released

8.18.0-1ubuntu2.1

Показывать по

EPSS

Процентиль: 34%
0.00414
Низкий

6.5 Medium

CVSS3

Связанные уязвимости

CVSS3: 6.5
redhat
3 месяца назад

libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTP(S) request after a Negotiate-authenticated one, when both use the same host. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different credentials. An application that first uses Negotiate authentication to a server with `user1:password1` and then does another operation to the same server asking for any authentication method but for `user2:password2` (while the previous connection is still alive) - the second request gets confused and wrongly reuses the same connection and sends the new request over that connection thinking it uses a mix of user1's and user2's credentials when ...

CVSS3: 6.5
nvd
3 месяца назад

libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTP(S) request after a Negotiate-authenticated one, when both use the same host. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different credentials. An application that first uses Negotiate authentication to a server with `user1:password1` and then does another operation to the same server asking for any authentication method but for `user2:password2` (while the previous connection is still alive) - the second request gets confused and wrongly reuses the same connection and sends the new request over that connection thinking it uses a mix of user1's and user2's credentials when

CVSS3: 6.5
msrc
3 месяца назад

wrong reuse of HTTP Negotiate connection

CVSS3: 6.5
debian
3 месяца назад

libcurl might in some circumstances reuse the wrong connection when as ...

CVSS3: 6.5
redos
около 1 месяца назад

Уязвимость curl

EPSS

Процентиль: 34%
0.00414
Низкий

6.5 Medium

CVSS3