EUVD-2026-18037
GHSA-2vrm-gr82-f7m5
2.7
CVSS 4.0
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X
Lifecycle Timeline
4
Patch Released
Apr 02, 2026 - 02:30 nvd
Patch available
Analysis Generated
Apr 01, 2026 - 21:00 vuln.today
EUVD ID Assigned
Apr 01, 2026 - 21:00 euvd
EUVD-2026-18037
CVE Published
Apr 01, 2026 - 20:09 nvd
LOW 2.7
Tags
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an attacker who controls the content_type parameter in aiohttp could use this to inject extra headers or similar exploits. This issue has been patched in version 3.13.4.
Analysis
Header injection in AIOHTTP prior to version 3.13.4 allows unauthenticated remote attackers to inject arbitrary headers by controlling the content_type parameter, potentially enabling HTTP response splitting or cache poisoning attacks. The vulnerability has a low CVSS score (2.7) reflecting limited integrity impact, but affects all versions before the patched release 3.13.4.
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Priority Score
14
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +14
POC: 0
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