Bug 2454100 (CVE-2026-34519) - CVE-2026-34519 aiohttp: aiohttp: Header injection vulnerability via reason parameter
Summary: CVE-2026-34519 aiohttp: aiohttp: Header injection vulnerability via reason pa...
Keywords:
Status: NEW
Alias: CVE-2026-34519
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-01 21:02 UTC by OSIDB Bzimport
Modified: 2026-04-01 22:47 UTC (History)
66 users (show)

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Description OSIDB Bzimport 2026-04-01 21:02:26 UTC 
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an attacker who controls the reason parameter when creating a Response may be able to inject extra headers or similar exploits. This issue has been patched in version 3.13.4.
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