CVE-2026-54275
AIOHTTP: TLS Server Hostname Override Is Ignored When Reusing HTTPS Connections
Description
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.
INFO
Published Date :
June 22, 2026, 4:34 p.m.
Last Modified :
June 22, 2026, 4:34 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-54275
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update aiohttp to version 3.14.1 or later.
- Verify TLS SNI checks are enforced correctly.
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The following list is the news that have been mention
CVE-2026-54275 vulnerability anywhere in the article.