aio-libs/aiohttp · Security
AIOHTTP's unicode processing of header values could cause parsing discrepancies
- GHSA ID
- GHSA-69f9-5gxw-wvc2
- CVE ID
- CVE-2025-69224
- Severity
- low
- Published
- Updated
- CVSS v4
- 2.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
Description
Summary
The Python HTTP parser may allow a request smuggling attack with the presence of non-ASCII characters.
Impact
If a pure Python version of aiohttp is installed (i.e. without the usual C extensions) or AIOHTTP_NO_EXTENSIONS is enabled, then an attacker may be able to execute a request smuggling attack to bypass certain firewalls or proxy protections.
Patch: https://github.com/aio-libs/aiohttp/commit/32677f2adfd907420c078dda6b79225c6f4ebce0
CWEs
- CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')