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CVE-2026-54280

AIOHTTP: Payload Response Resources Are Not Closed After Mid-Body Disconnect

Published: Jun 22, 2026Updated: Jun 26, 2026 Sources: CVE List NVDCWE-404
7.5HIGH
NVD MITRE
EPSS Score
0.3%
Top 79.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, payload resources are not closed correctly when a client disconnects in the middle of a write. If a payload is using an open file or similar limited resource, then an attacker may be able to cause resource starvation temporarily until garbage collection or similar closes the file. This vulnerability is fixed in 3.14.1.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-404

Affected Products

aiohttp
oss-project
aiohttpLibrary
OSS Libraries / web-framework
aio-libs
oss-projectaka aiohttp, aiosmtpd, aiohttp session
aiohttpLibrary
OSS Libraries / web-framework

Exploitability

Official Patch Available
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References

https://github.com/aio-libs/aiohttp/commit/a762eda5242f6490d6ba667533193f8b473ad587
github.com
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-9x8q-7h8h-wcw9
github.com

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