{"action":"Upgrade guzzlehttp/guzzle to 7.12.1 or later.","affected":[{"fixed":"7.12.1","introduced":"0"}],"component":"guzzlehttp/guzzle","cve_ids":["CVE-2026-55767"],"ecosystem":"Packagist","epss":0.00211,"exploited":false,"fixed_versions":["7.12.1"],"ghsa_id":"GHSA-cwxw-98qj-8qjx","id":"tcs_01M5KF19TMK6ZJA8CR98HH2VZK","modified_at":"2026-09-10T03:50:49.287156552Z","published_at":"2026-06-19T14:37:29Z","references":["https://osv.dev/vulnerability/GHSA-cwxw-98qj-8qjx","https://github.com/guzzle/guzzle/security/advisories/GHSA-cwxw-98qj-8qjx","https://nvd.nist.gov/vuln/detail/CVE-2026-55767","https://github.com/guzzle/guzzle/pull/3653","https://github.com/guzzle/guzzle/commit/7f537cded1912349abf5081258d6db19106d774d","https://github.com/FriendsOfPHP/security-advisories/blob/master/guzzlehttp/guzzle/CVE-2026-55767.yaml","https://github.com/guzzle/guzzle","https://github.com/guzzle/guzzle/releases/tag/7.12.1"],"severity":{"label":"medium","score":5.8},"sources":[{"source":"osv","source_id":"GHSA-cwxw-98qj-8qjx","url":"https://osv.dev/vulnerability/GHSA-cwxw-98qj-8qjx"}],"summary":"guzzlehttp/guzzle: Dot-Only Cookie Domains Match All Hosts"}