Allocation of Resources Without Limits or Throttling in aiohttp - #VU153863
Published: October 7, 2026
Vulnerability identifier: #VU153863
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: N/A
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service through resource exhaustion.
The vulnerability exists due to allocation of resources without limits or throttling in aiohttp when processing attacker-controlled requests. A remote attacker can send specially crafted requests to cause a denial of service through excessive or unbounded memory use or excessive CPU consumption.
Affected software
aiohttp
Remediation
Install security update from vendor's website.
aiohttp - update to 3.14.4