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CVE-2026-55766

Опубликовано: 23 июн. 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 4.8

Описание

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.1, guzzlehttp/psr7 did not reject CR/LF characters in certain first-party HTTP start-line fields: the request method, protocol version, and response reason phrase. If an application placed attacker-controlled data into one of those fields and later serialized the PSR-7 message as raw HTTP/1.x, for example with Message::toString() or an equivalent serializer, the serialized message could contain attacker-controlled header lines. The issue can also be reached through Message::parseRequest() or Message::parseResponse() when malformed raw messages are parsed into first-party PSR-7 objects and then serialized again. Creating or modifying a Request, Response, or other PSR-7 object alone is not sufficient. The issue requires the malformed message to be serialized and written to the network, forwarded, replayed, or otherwise processed by software that does not independently reject the malformed start line. ...

РелизСтатусПримечание
devel

not-affected

2.12.1-1
esm-apps-legacy/xenial

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

questing

ignored

end of life, was needs-triage
resolute

needs-triage

Показывать по

EPSS

Процентиль: 14%
0.00229
Низкий

4.8 Medium

CVSS3

Связанные уязвимости

CVSS3: 4.8
nvd
3 месяца назад

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.1, guzzlehttp/psr7 did not reject CR/LF characters in certain first-party HTTP start-line fields: the request method, protocol version, and response reason phrase. If an application placed attacker-controlled data into one of those fields and later serialized the PSR-7 message as raw HTTP/1.x, for example with Message::toString() or an equivalent serializer, the serialized message could contain attacker-controlled header lines. The issue can also be reached through Message::parseRequest() or Message::parseResponse() when malformed raw messages are parsed into first-party PSR-7 objects and then serialized again. Creating or modifying a Request, Response, or other PSR-7 object alone is not sufficient. The issue requires the malformed message to be serialized and written to the network, forwarded, replayed, or otherwise processed by software that does not independently reject the malformed start line. Thi

CVSS3: 4.8
debian
3 месяца назад

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. ...

CVSS3: 4.8
github
3 месяца назад

guzzlehttp/psr7: CRLF Injection in HTTP Start-Line Serialization

EPSS

Процентиль: 14%
0.00229
Низкий

4.8 Medium

CVSS3