EUVD-2026-18035
GHSA-hcc4-c3v8-rx92
2.7
CVSS 4.0
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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-2026-18035
CVE Published
Apr 01, 2026 - 20:06 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 unbounded DNS cache could result in excessive memory usage possibly resulting in a DoS situation. This issue has been patched in version 3.13.4.
Analysis
Unbounded DNS cache in AIOHTTP prior to version 3.13.4 allows remote attackers to cause denial of service through excessive memory consumption. An attacker can trigger repeated DNS lookups with unique hostnames to grow the in-memory cache without bounds, eventually exhausting available system memory. …
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Priority Score
14
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +14
POC: 0
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