CVE-2026-67355

mediumCVSS 5.9covered by 1 sourcefirst seen 2026-08-01

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.

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Advisory coverage (1)

mediumCVE-2026-67355: guzzlehttp/guzzle versions before 7.15.1 fail to preserve host-only cookie scope, storing the …nvd · 2026-08-01

External references

NVD record for CVE-2026-67355

CVE.org record

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