CVE-2026-34827 Rack: Algorithmic-Complexity DoS in Rack::Multipart::Parser

Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21, and 3.2.0 to before 3.2.6, Rack::Multipart::Parserhandlemimehead parses quoted multipart parameters such as Content-Disposition: form-data; name="..." using repeated Stringindex searches combined with...

CVE-2026-34827 Rack: Algorithmic-Complexity DoS in Rack::Multipart::Parser

Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21, and 3.2.0 to before 3.2.6, Rack::Multipart::Parserhandlemimehead parses quoted multipart parameters such as Content-Disposition: form-data; name="..." using repeated Stringindex searches combined with...

CVE-2026-34827

Rack CVE-2026-34827 describes an algorithmic-DoS in Rack::Multipart::Parser#handle_mime_head where quoted multipart parameters are parsed with repeated String#index searches and slice! prefix deletion. Affected versions are 3.0.0.beta1 up to before 3.1.21, and 3.2.0 up to before 3.2.6. An unauthe...

CVE-2026-34827 Rack: Algorithmic-Complexity DoS in Rack::Multipart::Parser

Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21, and 3.2.0 to before 3.2.6, Rack::Multipart::Parserhandlemimehead parses quoted multipart parameters such as Content-Disposition: form-data; name="..." using repeated Stringindex searches combined with...

CVE-2026-32145 Multipart form body parser bypasses body size limits in wisp

Allocation of Resources Without Limits or Throttling vulnerability in gleam-wisp wisp allows a denial of service via multipart form body parsing. The multipartbody function bypasses configured maxbodysize and maxfilessize limits. When a multipart boundary is not present in a chunk, the parser tak...

CVE-2026-5318

A flaw was found in LibRaw. A remote attacker could exploit this vulnerability by manipulating the 'bits' argument within the 'HuffTable::initval' function of the JPEG DHT Parser component. This manipulation leads to an out-of-bounds write, which can result in a Denial of Service DoS condition,...

CVE-2026-5236

A vulnerability was identified in Axiomatic Bento4 up to 1.6.0-641. Affected is the function AP4BitReader::SkipBits of the file Ap4Dac4Atom.cpp of the component DSI v1 Parser. Such manipulation of the argument npresentations leads to heap-based buffer overflow. The attack needs to be performed...

Out-of-bounds Write

Overview Affected versions of this package are vulnerable to Out-of-bounds Write in the initval function of the JPEG DHT Parser component when processing the bits argument. An attacker can cause a denial of service by supplying a specially crafted JPEG file that triggers an out-of-bounds write...

EUVD-2026-18116

A weakness has been identified in LibRaw up to 0.22.0. This impacts the function HuffTable::initval of the file src/decompressors/losslessjpeg.cpp of the component JPEG DHT Parser. This manipulation of the argument bits causes out-of-bounds write. It is possible to initiate the attack remotely. T...

CVE-2026-5318

A weakness has been identified in LibRaw up to 0.22.0. This impacts the function HuffTable::initval of the file src/decompressors/losslessjpeg.cpp of the component JPEG DHT Parser. This manipulation of the argument bits causes out-of-bounds write. It is possible to initiate the attack remotely. T...

UBUNTU-CVE-2026-5318

A weakness has been identified in LibRaw up to 0.22.0. This impacts the function HuffTable::initval of the file src/decompressors/losslessjpeg.cpp of the component JPEG DHT Parser. This manipulation of the argument bits causes out-of-bounds write. It is possible to initiate the attack remotely. T...

CVE-2026-5318

A weakness has been identified in LibRaw up to 0.22.0. This impacts the function HuffTable::initval of the file src/decompressors/losslessjpeg.cpp of the component JPEG DHT Parser. This manipulation of the argument bits causes out-of-bounds write. It is possible to initiate the attack remotely. T...

CVE-2026-5318

LibRaw is affected up to 0.22.0. The vulnerability resides in HuffTable::initval (src/decompressors/losslessjpeg.cpp) where manipulation of bits[] can trigger an out-of-bounds write. An attacker could potentially exploit this remotely, and a public exploit has been made available. The fix is the ...

CVE-2026-5318 LibRaw JPEG DHT losslessjpeg.cpp initval out-of-bounds write

A weakness has been identified in LibRaw up to 0.22.0. This impacts the function HuffTable::initval of the file src/decompressors/losslessjpeg.cpp of the component JPEG DHT Parser. This manipulation of the argument bits causes out-of-bounds write. It is possible to initiate the attack remotely. T...

CVE-2026-5318

A weakness has been identified in LibRaw up to 0.22.0. This impacts the function HuffTable::initval of the file src/decompressors/losslessjpeg.cpp of the component JPEG DHT Parser. This manipulation of the argument bits causes out-of-bounds write. It is possible to initiate the attack remotely. T...

CVE-2026-5318 LibRaw JPEG DHT losslessjpeg.cpp initval out-of-bounds write

A weakness has been identified in LibRaw up to 0.22.0. This impacts the function HuffTable::initval of the file src/decompressors/losslessjpeg.cpp of the component JPEG DHT Parser. This manipulation of the argument bits causes out-of-bounds write. It is possible to initiate the attack remotely. T...

PT-2026-29923

Summary Rack::Multipart::Parser unfolds folded multipart part headers incorrectly. When a multipart header contains an obs-fold sequence, Rack preserves the embedded CRLF in parsed parameter values such as filename or name instead of removing the folded line break during unfolding. As a result,...

PT-2026-29910

Summary Rack::Multipart::Parser only wraps the request body in a BoundedIO when CONTENT LENGTH is present. When a multipart/form-data request is sent without a Content-Length header, such as with HTTP chunked transfer encoding, multipart parsing continues until end-of-stream with no total size...

PT-2026-29677

A weakness has been identified in LibRaw up to 0.22.0. This impacts the function HuffTable::initval of the file src/decompressors/losslessjpeg.cpp of the component JPEG DHT Parser. This manipulation of the argument bits causes out-of-bounds write. It is possible to initiate the attack remotely. T...

Rack's greedy multipart boundary parsing can cause parser differentials and WAF bypass.

Summary Rack::Multipart::Parser extracts the boundary parameter from multipart/form-data using a greedy regular expression. When a Content-Type header contains multiple boundary parameters, Rack selects the last one rather than the first. In deployments where an upstream proxy, WAF, or intermedia...