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GHSA-mjrx-74jh-7xgw: Duplicate Advisory: Guzzle: Host-only cookie scope is not preserved

highCVSS 5.9
Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wm3w-8rrp-j577. This link is maintained to preserve external references. Original Description 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.

Details

Source
GitHub Security Advisories (INTL · database · site)
Severity
high — CVSS 5.9
Published
2026-08-01
Last updated
2026-08-04
Exploitation
Not in CISA KEV at last sync

Original advisory: https://github.com/advisories/GHSA-mjrx-74jh-7xgw

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