CVE-2026-54278

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, during cleanup it is possible for a compressed request body to be decompressed into memory in one chunk. An attacker may be able to send a compressed payload in specific situations that could be decompressed into memory, potentially leading to DoS (a zip bomb edge case). This vulnerability is fixed in 3.14.1.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/aio-libs/aiohttp/commit/4f7480e474cccc6a8cc2c92ad3f17a31dedf8232	Patch
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-g3cq-j2xw-wf74	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*

History

25 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) AIOHTTP es un framework asíncrono de cliente/servidor HTTP para asyncio y Python. Antes de la versión 3.14.1, durante la limpieza, es posible que un cuerpo de solicitud comprimido se descomprima en memoria en un solo bloque. Un atacante podría enviar una carga útil comprimida en situaciones específicas que podría descomprimirse en memoria, lo que podría conducir a un DoS (un caso límite de bomba zip). Esta vulnerabilidad está corregida en la versión 3.14.1.

Information

Published : 2026-06-22 18:16

Updated : 2026-10-25 23:10

NVD link : CVE-2026-54278

Mitre link : CVE-2026-54278

CVE.ORG link : CVE-2026-54278

JSON object : View

Products Affected

aiohttp

aiohttp

CWE

CWE-409

Improper Handling of Highly Compressed Data (Data Amplification)

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