This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-67355 →

DEBIAN-CVE-2026-67355

guzzlehttp/guzzle versions before 7.15.1 fail to preserve host-only cookie scope, storing the request host in the Domain field instead of marking cook...

Original description

The description as published by the source.

guzzlehttp/guzzle versions before 7.15.1 fail to preserve host-only cookie scope, storing the request host in the Domain field instead of marking cookies as host-only. Attackers controlling child hosts can receive host-only cookies intended only for parent hosts, potentially disclosing session identifiers and authorization tokens when the same cookie jar is reused across trust boundaries.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 guzzle

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 guzzle

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 guzzle

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.15.1-1"}]}]

References

advisory security-tracker.debian.org