CVE-2026-54278

A flaw was found in aiohttp, an asynchronous HTTP client/server framework. An attacker could send a specially crafted compressed request body that, during cleanup, would be decompressed into memory in one large chunk. This could potentially lead to a Denial of Service DoS condition, where the...

CVE-2026-54279

A flaw was found in aiohttp before 3.14.1. Host-only cookies saved with CookieJar.save and later restored with CookieJar.load lose their host-only flag, so cookies intended for a single host may be sent to subdomains after persistence...

python311-aiohttp-3.14.1-1.1 on GA media (moderate)

python311-aiohttp-3.14.1-1.1 on GA media Announcement ID: openSUSE-SU-2026:11097-1 Rating: moderate Cross-References: CVE-2026-50269 CVE-2026-54273 CVE-2026-54275 CVE-2026-54277 CVE-2026-54279 CVSS scores: CVE-2026-50269 SUSE : 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVE-2026-54273 SUSE ...

ROS-20260624-73-0042

The vulnerability in python-aiohttp is related to uncontrolled resource consumption. Exploiting this vulnerability can allow a remote attacker to cause service interruptions...

ROS-20260624-73-0044

The vulnerability in python-aiohttp is related to the failure to handle CR LF sequences in HTTP headers. Exploiting this vulnerability allows a remote attacker to inject arbitrary HTTP headers...

ROS-20260624-73-0047

The vulnerability in python-aiohttp is related to the failure to handle CR LF sequences in HTTP headers. Exploiting this vulnerability allows a remote attacker to inject arbitrary HTTP headers...

ROS-20260624-73-0046

The vulnerability in python-aiohttp is related to unlimited resource distribution. Exploiting this vulnerability can allow a remote attacker to cause service interruptions...

CVE-2026-54276

A flaw was found in aiohttp, an asynchronous HTTP client/server framework for asyncio and Python. The DigestAuthMiddleware component can send an authentication response after following a cross-origin redirect. This could allow a remote attacker, in conjunction with an open redirect vulnerability ...

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...

CVE-2026-54277

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, it is possible to bypass the maxlinesize check in parts of an HTTP request in the C parser. If using the optimised C parser the default in pre-built wheels, then an attacker may be able to send...

CVE-2026-54279

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, host-only cookies that are saved with CookieJar.save and then restored later with CookieJar.load lose their host-only status. This vulnerability is fixed in 3.14.1...

PYSEC-2026-2111

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...

PYSEC-2026-2111

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...

CVE-2026-54275

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, the serverhostname TLS SNI check can be bypassed when an existing connection is reused. If an application makes multiple requests to the same domain, but with different per-request serverhostname...

CVE-2026-54280

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...

PYSEC-2026-237

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, the serverhostname TLS SNI check can be bypassed when an existing connection is reused. If an application makes multiple requests to the same domain, but with different per-request serverhostname...

CVE-2026-54276

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, DigestAuthMiddleware can send an authentication response after following a cross-origin redirect. This likely requires an open redirect vulnerability or similar on the target domain for an attacker to...

PYSEC-2026-237

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, the serverhostname TLS SNI check can be bypassed when an existing connection is reused. If an application makes multiple requests to the same domain, but with different per-request serverhostname...

PYSEC-2026-2113

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...

227checkergenerator (>=1.0.0 <=1.0.1), 5mghost-rover (>=0.0.1 <=0.0.3) +1861 more potentially affected by CVE-2026-54275 via aiohttp (>=0.13.1 <=3.14.0)

aiohttp PYPI version =0.13.1, =1.0.0, =0.0.1, =0.1.1, =0.1.0b0, =1.1.0, =1.0.1, =0.31.5, =0.6.0, =0.0.0, =0.0.33.post1 and more Source cves: CVE-2026-54275 Source advisory: OSV:PYSEC-2026-237...