AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, multiple Host headers were allowed in aiohttp. This issue has been patched in version 3.13.4.
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History
Thu, 02 Apr 2026 00:15:00 +0000
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threat_severity
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cvssV3_1
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Wed, 01 Apr 2026 23:45:00 +0000
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| Description | AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, multiple Host headers were allowed in aiohttp. This issue has been patched in version 3.13.4. | |
| Title | AIOHTTP: Duplicate Host header accepted | |
| Weaknesses | CWE-20 CWE-444 |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-04-01T20:28:46.652Z
Reserved: 2026-03-30T16:03:31.048Z
Link: CVE-2026-34525
No data.
Status : Received
Published: 2026-04-01T21:17:00.490
Modified: 2026-04-01T21:17:00.490
Link: CVE-2026-34525
OpenCVE Enrichment
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