[MEDIUM] guzzlehttp/psr7: Host Confusion via Weak URI Host Validation

PKSA-vznr-tgp9-fd7d CVE-2026-59882 GHSA-c2w2-prh8-qm98

Affected version: <2.12.3

Reported by:
GitHub

[MEDIUM] CRLF injection in HTTP start-line serialization

PKSA-7qs6-zvnz-h66r CVE-2026-55766 GHSA-vm85-hxw5-5432

Affected version: <2.12.1

Reported by:
GitHub, FriendsOfPHP/security-advisories

[MEDIUM] Host confusion via authority reinterpretation

PKSA-jj5t-2zs1-dcfm CVE-2026-48998 GHSA-34xg-wgjx-8xph

Affected version: <2.10.2

Reported by:
GitHub, FriendsOfPHP/security-advisories

[MEDIUM] CRLF injection via URI host component

PKSA-gm5x-j3mz-71n9 CVE-2026-49214 GHSA-hq7v-mx3g-29hw

Affected version: <2.10.2

Reported by:
GitHub, FriendsOfPHP/security-advisories