medium

CVE-2026-111748

PyPI · aiohttp

Summary

AIOHTTP: Absolute-form request targets can spoof Request.scheme

Severity
medium
EPSS
0.4% (p32)
CWE
CWE-807
Also known as
GHSA-f9xw-jh8m-3mwq
Published
2026-10-20
Updated
2026-10-20

Advisory details

Summary

An attacker sending an absolute-form request can spoof the scheme used.

Impact

If user code depends on the Request.scheme attribute for anything security related, an attacker may be able to circumvent this logic, tricking the application into thinking a connection is encrypted when it is not, or vice versa.

Workaround

A WAF rule to reject absolute-form requests (legitimate requests should only use this form for proxies).

References

Related advisories

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.