AIOHTTP: Cookie from subdomain can remove Host-Only Scope from existing cookies
### Summary A subdomain can remove the Host-Only flag from an existing cookie to a parent domain. ### Impact A user accessing untrusted subdomains could see their Host-Only protections stripped from cookies. Given most usecases won't reflect these cookies to a browser, the impact is limited.
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beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2026-111749US | — | — | ||
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.… | ||||
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Referenzen
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/aio-libs/aiohttpPACKAGE
- https://github.com/aio-libs/aiohttp/commit/6a07c171ef9f3be583e2907dcd1931372efca8d6WEB
- https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4WEB
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-gx76-c99x-2c96WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-111749ADVISORY
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