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

🗓️ 19 Jun 2026 14:35:57Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 21 Views

CRLF injection fix in HTTP; Guzzle PSR-7 2.12.1 rejects CRLF in method, version, reason phrase.

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Detection
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Fedora 43 : nextcloud (2026-5afe6630dc)
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Fedora 43 : roundcubemail (2026-914a40b4fd)
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Vulners
Node
guzzlehttppsr7Range<2.12.1composer

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19 Jun 2026 14:35Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.8
EPSS0.00158
SSVC
21