EUVD-2026-37790

Tinyproxy through 1.11.3, fixed in commit 364cdb6, fails to reject requests containing multiple Content-Length headers with differing values, forwarding all duplicate headers to the backend while using the first value to determine how many request body bytes to consume. Remote attackers can...

EUVD-2026-37789

Tinyproxy through 1.11.3, fixed in commit ff45d3b, fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to determine how many request body bytes to consume. Remote attackers can desynchronize the...

CVE-2026-54387

CVE-2026-54387 affects Tinyproxy up to version 1.11.3. It fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to consume the request body. This desynchronizes frontend/backend parsers and can enab...

CVE-2026-54387 Tinyproxy - HTTP Request Smuggling via CL/TE Desynchronization

Tinyproxy through 1.11.3, fixed in commit ff45d3b, fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to determine how many request body bytes to consume. Remote attackers can desynchronize the...

CVE-2026-54387 Tinyproxy - HTTP Request Smuggling via CL/TE Desynchronization

Tinyproxy through 1.11.3, fixed in commit ff45d3b, fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to determine how many request body bytes to consume. Remote attackers can desynchronize the...

CVE-2026-54387

Tinyproxy through 1.11.3, fixed in commit ff45d3b, fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to determine how many request body bytes to consume. Remote attackers can desynchronize the...

Improper Input Validation

hono is vulnerable to Improper Input Validation. The vulnerability is due to trusting the client-supplied Content-Length header instead of validating the actual request body size, which allows an attacker to bypass configured body size limits by declaring a smaller content length while sending a...

PT-2026-50539

Name of the Vulnerable Software and Affected Versions Tinyproxy versions prior to 1.11.4 Description Tinyproxy fails to reject requests containing multiple Content-Length headers with differing values. The software forwards all duplicate headers to the backend but uses only the first value to...

PT-2026-50538

Name of the Vulnerable Software and Affected Versions Tinyproxy versions prior to commit ff45d3b Description Tinyproxy fails to reconcile conflicting Content-Length and Transfer-Encoding: chunked headers, forwarding both verbatim to the backend while using Content-Length to determine the number o...

Insufficient Verification of Data Authenticity

Overview hono is an Ultrafast web framework for the Edges Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity in the Body Limit Middleware. An attacker can cause the application to process payloads larger than the configured maximum by understating t...

hono: Body Limit Middleware can be bypassed on AWS Lambda by understating `Content-Length`

Summary The Body Limit Middleware trusts the request's Content-Length header to decide whether a body is within the limit. On AWS Lambda API Gateway v1/v2, ALB, VPC Lattice, and Lambda@Edge the body is delivered fully buffered and the adapter builds the request with the client-declared...

NPM: hono: Body Limit Middleware can be bypassed on AWS Lambda by understating `Content-Length`

NPM: hono: Body Limit Middleware can be bypassed on AWS Lambda by understating Content-Length vulnerability discovered by ? in WordPress Npm hono versions 4.12.25...

GHSA-RV63-4MWF-QQC2 hono: Body Limit Middleware can be bypassed on AWS Lambda by understating `Content-Length`

Summary The Body Limit Middleware trusts the request's Content-Length header to decide whether a body is within the limit. On AWS Lambda API Gateway v1/v2, ALB, VPC Lattice, and Lambda@Edge the body is delivered fully buffered and the adapter builds the request with the client-declared...

PT-2026-49735

Name of the Vulnerable Software and Affected Versions Hono versions prior to 4.12.25 Description The Body Limit Middleware trusts the Content-Length header to determine if a request body is within the allowed limit. In environments such as AWS Lambda including API Gateway v1/v2, ALB, VPC Lattice,...

python-multipart: Negative Content-Length in parse_form buffers the entire body in memory

Summary parseform did not validate the Content-Length header before using it to bound its chunked read of the request body. A negative Content-Length turned the bounded read into a read-until-EOF, so the entire body was loaded into memory in a single read instead of in fixed-size chunks. Details...

Improper Validation of Specified Quantity in Input

Overview python-multipart is an A streaming multipart parser for Python Affected versions of this package are vulnerable to Improper Validation of Specified Quantity in Input in the parseform function when processing a negative Content-Length header. An attacker can cause excessive memory usage b...

GHSA-V9PG-7XVM-68HF python-multipart: Negative Content-Length in parse_form buffers the entire body in memory

Summary parseform did not validate the Content-Length header before using it to bound its chunked read of the request body. A negative Content-Length turned the bounded read into a read-until-EOF, so the entire body was loaded into memory in a single read instead of in fixed-size chunks. Details...

PT-2026-49572

Name of the Vulnerable Software and Affected Versions Python-Multipart versions prior to 0.0.31 Description The parse form function fails to validate the Content-Length header before using it to limit the chunked read of the request body. Because the header value is parsed as an integer without a...

Fedora 44 : python-python-multipart (2026-104e079187)

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-104e079187 advisory. 0.0.32 2026-06-04 Speed up partial-boundary scanning for CR/LF-dense part data. ---- 0.0.31 2026-06-04 Speed up multipart header parsing and callback dispatc...

NIOExtras: NIOHTTPRequestDecompressor ratio limit bypass via inflated Content-Length

Impact When NIOHTTPRequestDecompressor is configured with .ratioN, the decompression limit is enforced using the Content-Length header value from the incoming request rather than the actual number of compressed bytes received. Since Content-Length is attacker-controlled, a malicious client can...