aiohttp server lacks an initial request/header timeout

Summary The keepalive timeout was not used during the initial portion of a request. Impact An attacker could keep an idle connection open indefinitely before sending any data. Workaround Use a reverse proxy as recommended for all production deployments with sensible keepalive limits...

GHSA-494J-54XM-RWP3 AIOHTTP: Secure attribute not enforced for shared cookie

Summary The Secure attribute was not being enforced for the shared cookie. Impact It may be possible to send a shared cookie marked Secure through an unencrypted request...

AIOHTTP: Secure attribute not enforced for shared cookie

Summary The Secure attribute was not being enforced for the shared cookie. Impact It may be possible to send a shared cookie marked Secure through an unencrypted request...

aiohttp: Multiple instances of excessive or unbounded memory/CPU use

Summary Multiple cases were found where aiohttp could use excessive or unbounded memory, or excessive CPU consumption on attacker controlled requests. Impact An attacker could cause resource exhaustion through specially crafted requests...

GHSA-4WC5-F2RC-Q74M russh: Unbounded memory allocation in agent protocol server via crafted constraint records

Summary russhkeys::agent::server::addkey russh/src/keys/agent/server.rs:271-319 spawns a dedicated tokio task for every 5-byte SSHAGENTCONSTRAINLIFETIME record attached to an added key, each cloning the key blob and sleeping for the declared lifetime up to 136 years. The loop has no per-request...

russh: Unbounded memory allocation in agent protocol server via crafted constraint records

Summary russhkeys::agent::server::addkey russh/src/keys/agent/server.rs:271-319 spawns a dedicated tokio task for every 5-byte SSHAGENTCONSTRAINLIFETIME record attached to an added key, each cloning the key blob and sleeping for the declared lifetime up to 136 years. The loop has no per-request...

CVE-2026-111750 AIOHTTP: Pure-Python parser request smuggling

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the pure Python parser accepts ambiguous HTTP request framing. An unauthenticated attacker can consequently smuggle requests when an application uses AIOHTTPNOEXTENSIONS or otherwise runs without a...

CVE-2026-111750 AIOHTTP: Pure-Python parser request smuggling

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the pure Python parser accepts ambiguous HTTP request framing. An unauthenticated attacker can consequently smuggle requests when an application uses AIOHTTPNOEXTENSIONS or otherwise runs without a...

CVE-2026-111750

The AIOHTTP asynchronous HTTP client/server framework for Python and asyncio is vulnerable to HTTP request smuggling in versions prior to 3.14.4 . The issue stems from a pure Python parser that accepts ambiguous HTTP request framing. An unauthenticated attacker can smuggle requests if an applicat...

CVE-2026-111750

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the pure Python parser accepts ambiguous HTTP request framing. An unauthenticated attacker can consequently smuggle requests when an application uses AIOHTTPNOEXTENSIONS or otherwise runs without a...

A russh SSH server accepts a publickey authentication whose signature uses a different algorithm than the one named in the request

Details In russh/src/server/encrypted.rs, serverreadauthrequestpk 0.63.3, around lines 880-990: The requested algorithm name pubkeyalgo is read and only used to decode the key: PublicKeyOrCertificate::decode&pubkeyalgo, &pubkeykey. The derived hashalg is then dropped...

GHSA-J7H2-66J4-GHJF A russh SSH server accepts a publickey authentication whose signature uses a different algorithm than the one named in the request

Details In russh/src/server/encrypted.rs, serverreadauthrequestpk 0.63.3, around lines 880-990: The requested algorithm name pubkeyalgo is read and only used to decode the key: PublicKeyOrCertificate::decode&pubkeyalgo, &pubkeykey. The derived hashalg is then dropped...

CVE-2026-111062

The russh SSH server library (all releases from 0.34.0-beta.1 through 0.63.3 and main ) contains a vulnerability where it fails to verify that the signature algorithm matches the one requested in the publickey authentication request. Specifically, in russh/src/server/encrypted.rs, the server deco...

CVE-2026-111749 AIOHTTP: Cookie from subdomain can remove Host-Only Scope from existing cookies

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Host-Only scope on an existing parent-domain cookie can be removed by a subdomain. A user who accesses an untrusted subdomain can consequently have host-only protections stripped from cookies, althoug...

CVE-2026-111749 AIOHTTP: Cookie from subdomain can remove Host-Only Scope from existing cookies

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Host-Only scope on an existing parent-domain cookie can be removed by a subdomain. A user who accesses an untrusted subdomain can consequently have host-only protections stripped from cookies, althoug...

CVE-2026-111749

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Host-Only scope on an existing parent-domain cookie can be removed by a subdomain. A user who accesses an untrusted subdomain can consequently have host-only protections stripped from cookies, althoug...

CVE-2026-111749

The AIOHTTP asynchronous HTTP client/server framework for Python and asyncio is vulnerable to a flaw where a subdomain can remove the Host-Only scope from an existing parent-domain cookie. This occurs in versions prior to 3.14.4 . A user interacting with an untrusted subdomain could have host-onl...

CVE-2026-111748 AIOHTTP: Absolute-form request targets can spoof Request.scheme

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, an attacker can send an absolute-form request that causes Request.scheme to use attacker-controlled request-target scheme data instead of the connection protocol. Applications that use Request.scheme...

CVE-2026-111748 AIOHTTP: Absolute-form request targets can spoof Request.scheme

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, an attacker can send an absolute-form request that causes Request.scheme to use attacker-controlled request-target scheme data instead of the connection protocol. Applications that use Request.scheme...

CVE-2026-111748

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, an attacker can send an absolute-form request that causes Request.scheme to use attacker-controlled request-target scheme data instead of the connection protocol. Applications that use Request.scheme...