HIGH 8.2 NVD
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 cookies as hos
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.
References
- https://github.com/guzzle/guzzle/security/advisories/GHSA-wm3w-8rrp-j577
- https://www.vulncheck.com/advisories/guzzlehttp-guzzle-before-host-only-cookie-scope
This high severity vulnerability with a CVSS score of 8.2 was published on 2026-08-01 via NVD.
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