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CVE-2026-54275

2.7 low SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 2.7 · aiohttpNVD modified 2026-10-25 23:10

Affected (CPE criteria) 1

  • cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*

References 1