aiohttp: Incomplete websocket frame payloads bypass memory limits

Summary If an attacker sends large incomplete websocket frame payloads, it may be possible to bypass the usual size limits on memory use. Impact If a web application has WebSocket endpoints, it may be possible for an attacker to execute a DoS attack through excessive memory use. ----- Patch:...

aiohttp: TLS Server Hostname Override Is Ignored When Reusing HTTPS Connections

Summary The serverhostname TLS SNI check can be bypassed when an existing connection is reused. Impact If an application makes multiple requests to the same domain, but with different per-request serverhostname parameters, then the later calls may succeed by reusing the existing connection when...

GHSA-9X8Q-7H8H-WCW9 aiohttp: Payload Response Resources Are Not Closed After Mid-Body Disconnect

Summary Payload resources are not closed correctly when a client disconnects in the middle of a write. Impact 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...

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

Summary Payload resources are not closed correctly when a client disconnects in the middle of a write. Impact 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...

GHSA-4FVR-RGM6-GQMC aiohttp: HTTP/1 Pipelined Requests Queue Without Limit

Summary No limit was present on the number of pipelined requests that could be queued. Impact An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. ----- Patch:...

GHSA-G3CQ-J2XW-WF74 aiohttp: Unread Compressed Request Bodies Bypass client_max_size During Cleanup

Summary During cleanup it is possible for a compressed request body to be decompressed into memory in one chunk. Impact 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. Workaround...

aiohttp: Unread Compressed Request Bodies Bypass client_max_size During Cleanup

Summary During cleanup it is possible for a compressed request body to be decompressed into memory in one chunk. Impact 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. Workaround...

GHSA-63HW-FMQ6-XXG2 aiohttp: C HTTP Parser Bypasses max_line_size for Fragmented Lines

Summary It is possible to bypass the maxlinesize check in parts of an HTTP request in the C parser. Impact If using the optimised C parser the default in pre-built wheels, then an attacker may be able to send oversized lines through the HTTP parser and use an excessive amount of memory, potential...

GHSA-2FQR-MR3J-6WP8 aiohttp: Host-Only Cookies Become Domain Cookies After CookieJar Persistence

Summary Host-only cookies that are saved with CookieJar.save and then restored later with CookieJar.load lose their host-only status. Impact Host-only cookies that have been loaded from disk may get sent to subdomains that previously should have been disallowed. ----- Patch:...

aiohttp: Host-Only Cookies Become Domain Cookies After CookieJar Persistence

Summary Host-only cookies that are saved with CookieJar.save and then restored later with CookieJar.load lose their host-only status. Impact Host-only cookies that have been loaded from disk may get sent to subdomains that previously should have been disallowed. ----- Patch:...

GHSA-M6QW-4CW2-HM4M aiohttp: CRLF injection in multipart headers

Summary Attacker-controlled input included into multipart/payload headers can be used to modify a request to inject additional headers or similar. Impact In the unlikely situation that an application is passing user-controlled strings into MultipartWriter.appendheaders=... or Payload.headers, the...

aiohttp: CRLF injection in multipart headers

Summary Attacker-controlled input included into multipart/payload headers can be used to modify a request to inject additional headers or similar. Impact In the unlikely situation that an application is passing user-controlled strings into MultipartWriter.appendheaders=... or Payload.headers, the...

ROOT-APP-PYPI-CVE-2024-30251 CVE-2024-30251 in rootio-aiohttp - Patched by Root

Root has patched CVE-2024-30251 in the rootio-aiohttp package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-CVE-2024-23334 CVE-2024-23334 in rootio-aiohttp - Patched by Root

Root has patched CVE-2024-23334 in the rootio-aiohttp package for Root:PyPI. Multiple fixed versions available...

ROOT-APP-PYPI-CVE-2024-52304 CVE-2024-52304 in rootio-aiohttp - Patched by Root

Root has patched CVE-2024-52304 in the rootio-aiohttp package for Root:PyPI. Multiple fixed versions available...

aioHTTP < 3.14.0 Multiple Vulnerabilities

The version of aioHTTP installed on the remote host is prior to 3.14.0. It is, therefore, affected by multiple vulnerabilities: - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, using CookieJar.load with untrusted input may allow arbitrary...

CVE-2026-34993

A flaw was found in AIOHTTP, an asynchronous HTTP client/server framework for asyncio and Python. An attacker could exploit this vulnerability by providing untrusted input to the CookieJar.load function. This could potentially lead to arbitrary code execution, allowing the attacker to run malicio...

ROOT-APP-PYPI-CVE-2026-34520 CVE-2026-34520 in rootio-aiohttp - Patched by Root

Root has patched CVE-2026-34520 in the rootio-aiohttp package for Root:PyPI. Multiple fixed versions available...

OESA-2026-2563 python-aiohttp security update

Async http client/server framework asyncio. Security Fixes: Most applications using this function will be doing so with the user's own data, so this is unlikely to affect many applications.CVE-2026-34993 If a developer uses the cookies parameter on a per-request basis then sensitive data might be...

OPENSUSE-SU-2026:10963-1 python311-aiohttp-3.14.0-1.1 on GA media

These are all security issues fixed in the python311-aiohttp-3.14.0-1.1 package on the GA media of openSUSE Tumbleweed...