GHSA-gx76-c99x-2c96
AIOHTTP: Cookie from subdomain can remove Host-Only Scope from existing cookies
At a glance
- Published
- Updated
- CVE
- CVE-2026-111749
- CVSS_V4
- 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
Description
### 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.
Affected packages
| Package | Versions |
|---|---|
| PyPI · aiohttp | introduced 0, fixed 3.14.4 |
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-gx76-c99x-2c96 WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-111749 ADVISORY
- https://github.com/aio-libs/aiohttp/commit/6a07c171ef9f3be583e2907dcd1931372efca8d6 WEB
- https://github.com/aio-libs/aiohttp PACKAGE
- https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |