CVE-2026-54287 Hono: AWS Lambda adapter merges multiple `Set-Cookie` headers into one value, dropping cookies on ALB single-header and Lattice

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, on AWS Lambda, the ALB single-header response and the VPC Lattice v2 response join multiple Set-Cookie headers into one comma-separated value. Because commas also appear inside cookie attribute...

EUVD-2026-38326

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, on AWS Lambda, the ALB single-header response and the VPC Lattice v2 response join multiple Set-Cookie headers into one comma-separated value. Because commas also appear inside cookie attribute...

CVE-2026-54287

Summary: Hono’s AWS Lambda adapter, in the ALB single-header mode and VPC Lattice v2, concatenates multiple Set-Cookie headers into a single comma-separated value, causing cookie attributes that include commas (e.g., Expires) to be misparsed or dropped. Affected components: Hono web framework; AW...

EUVD-2026-38319

Starlette is a lightweight ASGI framework/toolkit. From 0.4.1 until 1.3.1, request.form accepts maxfields and maxpartsize to bound resource consumption while parsing form data. These limits are enforced for multipart/form-data, but silently ignored for application/x-www-form-urlencoded. An...

CVE-2026-54283

Starlette is a lightweight ASGI framework/toolkit. From 0.4.1 until 1.3.1, request.form accepts maxfields and maxpartsize to bound resource consumption while parsing form data. These limits are enforced for multipart/form-data, but silently ignored for application/x-www-form-urlencoded. An...

EUVD-2026-38318

Starlette is a lightweight ASGI framework/toolkit. Prior to 1.3.0, the HTTP request path is not validated before being used to reconstruct request.url. Because request.url is rebuilt by concatenating scheme://hostpath and re-parsing the result, a path that does not begin with / for example...

CVE-2026-54282 Starlette: Unvalidated request path concatenated into authority poisons request.url.hostname

Starlette is a lightweight ASGI framework/toolkit. Prior to 1.3.0, the HTTP request path is not validated before being used to reconstruct request.url. Because request.url is rebuilt by concatenating scheme://hostpath and re-parsing the result, a path that does not begin with / for example...

CVE-2026-54282 Starlette: Unvalidated request path concatenated into authority poisons request.url.hostname

Starlette is a lightweight ASGI framework/toolkit. Prior to 1.3.0, the HTTP request path is not validated before being used to reconstruct request.url. Because request.url is rebuilt by concatenating scheme://hostpath and re-parsing the result, a path that does not begin with / for example...

EUVD-2026-38317

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, no limit was present on the number of pipelined requests that could be queued. An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. This...

CVE-2026-54273

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, no limit was present on the number of pipelined requests that could be queued. An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. This...

CVE-2026-54280 AIOHTTP: Payload Response Resources Are Not Closed After Mid-Body Disconnect

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...

EUVD-2026-38316

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...

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...

CVE-2026-54278 AIOHTTP: Unread Compressed Request Bodies Bypass client_max_size During Cleanup

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-2026-54278

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: C HTTP Parser Bypasses max_line_size for Fragmented Lines

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...

EUVD-2026-38314

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-2026-54277 AIOHTTP: C HTTP Parser Bypasses max_line_size for Fragmented Lines

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-2026-54276

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...

CVE-2026-54276 AIOHTTP: DigestAuthMiddleware Applies Credentials to Cross-Origin Redirect Challenges

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...