{"id":"CVE-2026-111749","revision":"b4620062494446d092278e839939383c","records":[{"revision":"b4620062494446d092278e839939383c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-111749","aliases":[],"title":"AIOHTTP: Cookie from subdomain can remove Host-Only Scope from existing cookies","description":"AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Host-Only scope on an existing parent-domain cookie can be removed by a subdomain. A user who accesses an untrusted subdomain can consequently have host-only protections stripped from cookies, although impact is limited when applications do not reflect those cookies to a browser. This issue is fixed in version 3.14.4.","state":0,"publishedAt":"2026-10-19T17:04:42.374+00:00","modifiedAt":"2026-10-22T20:52:37.188+00:00","affected":[{"ecosystem":"Vendor product","name":"aiohttp","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"aio-libs\",\n                    \"product\": \"aiohttp\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 3.14.4\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":2.3,"severity":"LOW"}],"references":["https://github.com/aio-libs/aiohttp/security/advisories/GHSA-gx76-c99x-2c96","https://github.com/aio-libs/aiohttp/commit/6a07c171ef9f3be583e2907dcd1931372efca8d6","https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111749","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111749","identifiers":["CVE-2026-111749"]},"retained":false,"historicalAffected":[]}],"coverage":[]}