CVE-2026-54280
HIGHAIOHTTP: Payload Response Resources Are Not Closed After Mid-Body Disconnect
Title source: cnaDescription
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.
References (2)
Core 2
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-9x8q-7h8h-wcw9
X_Refsource_Misc x_refsource_misc
https://github.com/aio-libs/aiohttp/commit/a762eda5242f6490d6ba667533193f8b473ad587
Scores
CVSS v3
7.5
EPSS
0.0028
EPSS Percentile
20.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-404
Status
published
Products (2)
aio-libs/aiohttp
< 3.14.1
aiohttp/aiohttp
< 3.14.1
Published
Jun 22, 2026
Tracked Since
Jun 22, 2026