Name: CVE-2026-34516: Allocation of Resources Without Limits or Throttling
Creator: Rapid7
Published: 2026-04-01T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-34516, CWE-770, CVSS 7.5, EPSS 0.00038

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, a response with an excessive number of multipart headers may be allowed to use more memory than intended, potentially allowing a DoS vulnerability. This issue has been patched in version 3.13.4.

CVSS Details

CVSS 4.0 Base Score: 6.6 (MEDIUM)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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)
CVSS 3.1 Base Score: 7.5
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade py3-aiohttp	Apr 29, 2026	Apr 1, 2026
Debian	—	Upgrade python-aiohttp	Jun 2, 2026	Jun 2, 2026
Oracle_linux	—	Upgrade python39-oci-sdkUpgrade python39-oci-sdk-docs	Oct 28, 2026	Apr 1, 2026
Splunk	—	Upgrade Splunk Enterprise to version 9.3.13Upgrade Splunk Enterprise to version 10.0.7Upgrade Splunk Enterprise to version 10.4.0Upgrade Splunk Enterprise to version 10.2.4Upgrade Splunk Enterprise to version 9.4.12	Jul 30, 2026	Apr 1, 2026
Ubuntu	—	Upgrade python3-aiohttp (Ubuntu Pro)	Jul 23, 2026	Jul 22, 2026

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CVSS Details

Covered by Rapid7

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