[HIGH] Guzzle: Noncanonical host can bypass host-based checks

PKSA-gcrk-3vtt-1r14 CVE-2026-69246 GHSA-v5mv-p594-2x33

Affected version: >=8.0.0,<8.0.1|<7.15.2

Reported by:
GitHub

[MEDIUM] Guzzle: Noncanonical cookie domain keeps subdomain scope

PKSA-cnw1-2ytm-cgr8 CVE-2026-69245 GHSA-f7vp-7xgx-4w4r

Affected version: >=8.0.0,<8.0.1|<7.15.2

Reported by:
GitHub

[MEDIUM] Guzzle: URI fragments disclosed in redirect Referer headers

PKSA-fy2t-3c5f-827y CVE-2026-67354 GHSA-h95v-h523-3mw8

Affected version: <7.15.1

Reported by:
GitHub

[MEDIUM] Guzzle: Host-only cookie scope is not preserved

PKSA-qxvb-2bpp-dnk6 CVE-2026-67355 GHSA-wm3w-8rrp-j577

Affected version: <7.15.1

Reported by:
GitHub

[MEDIUM] Guzzle: Unbounded response cookies risk denial of service

PKSA-bbs6-q5q9-f3t4 CVE-2026-67353 GHSA-f283-ghqc-fg79

Affected version: <7.15.1

Reported by:
GitHub

[MEDIUM] Guzzle: Cookie Disclosure and Injection via IP-Address Domains

PKSA-bcdd-5xc7-gwfb CVE-2026-59883 GHSA-g446-98w2-8p5w

Affected version: <7.12.3

Reported by:
GitHub

[MEDIUM] Guzzle: Proxy-Authorization headers can be sent to origin servers

PKSA-pwsk-hy21-4gby CVE-2026-67339 GHSA-94pj-82f3-465w

Affected version: <7.14.2

Reported by:
GitHub

[MEDIUM] Silent HTTPS proxy downgrade to cleartext

PKSA-k22t-f949-t9g6 CVE-2026-55568 GHSA-wpwq-4j6v-78m3

Affected version: <7.12.1

Reported by:
GitHub, FriendsOfPHP/security-advisories

[MEDIUM] Dot-only cookie domains match all hosts

PKSA-93qv-9n9h-6k6p CVE-2026-55767 GHSA-cwxw-98qj-8qjx

Affected version: <7.12.1

Reported by:
GitHub, FriendsOfPHP/security-advisories