Debian/php-guzzlehttp-psr7: medium 4.8
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 metho
Action: Upgrade php-guzzlehttp-psr7 to 2.12.1-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 2.12.1-1 | - |
Fixed versions
| 2.12.1-1 |
Sources
- osv: DEBIAN-CVE-2026-55766#Debian:14/php-guzzlehttp-psr7
- https://security-tracker.debian.org/tracker/CVE-2026-55766
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