CVE-2026-54275

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, the server_hostname TLS SNI check can be bypassed when an existing connection is reused. If an application makes multiple requests to the same domain, but with different per-request server_hostname parameters, then the later calls may succeed by reusing the existing connection when they should have been rejected due to the TLS SNI check. This vulnerability is fixed in 3.14.1.

CVSS

No CVSS.

References

Link	Resource
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-4m7w-qmgq-4wj5

Configurations

No configuration.

History

22 Jun 2026, 18:28

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-22 18:16

Updated : 2026-06-22 19:17

NVD link : CVE-2026-54275

Mitre link : CVE-2026-54275

CVE.ORG link : CVE-2026-54275

JSON object : View

Products Affected

No product.

CWE

CWE-297

Improper Validation of Certificate with Host Mismatch

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