Bug 2454094 (CVE-2026-34520) - CVE-2026-34520 aiohttp: AIOHTTP: Header injection vulnerability due to improper character handling
Summary: CVE-2026-34520 aiohttp: AIOHTTP: Header injection vulnerability due to improp...
Keywords:
Status: NEW
Alias: CVE-2026-34520
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
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Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-01 21:01 UTC by OSIDB Bzimport
Modified: 2026-04-01 23:06 UTC (History)
66 users (show)

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Description OSIDB Bzimport 2026-04-01 21:01:53 UTC 
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, the C parser (the default for most installs) accepted null bytes and control characters in response headers. This issue has been patched in version 3.13.4.
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