CVE-2025-69224: AIOHTTP's unicode processing of header values could cause parsing discrepancies

January 5, 2026 (updated January 6, 2026)

The Python HTTP parser may allow a request smuggling attack with the presence of non-ASCII characters.

References

github.com/advisories/GHSA-69f9-5gxw-wvc2
github.com/aio-libs/aiohttp
github.com/aio-libs/aiohttp/commit/32677f2adfd907420c078dda6b79225c6f4ebce0
github.com/aio-libs/aiohttp/security/advisories/GHSA-69f9-5gxw-wvc2
nvd.nist.gov/vuln/detail/CVE-2025-69224

Code Behaviors & Features

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