crypto/tls: Handshake messages may be processed at the incorrect encryption level in crypto/tls

A TLS connection handling flaw has been discovered in the golang crypto/tls library. During the TLS 1.3 handshake if multiple messages are sent in records that span encryption level boundaries for instance the Client Hello and Encrypted Extensions messages, the subsequent messages may be processe...

cmd/go: cmd/go: Arbitrary file write via malicious pkg-config directive

A flaw was found in cmd/go. An attacker can exploit this by building a malicious Go source file that uses the 'cgo pkg-config:' directive. This allows the attacker to write to an arbitrary file with partial control over its content, by providing a '--log-file' argument to the pkg-config command...

cmd/cgo: Go cgo: Code smuggling due to comment parsing discrepancy

A flaw was found in Go's 'cgo tool'. This vulnerability arises from a discrepancy in how Go and C/C++ comments are parsed, which allows for malicious code to be hidden within comments and then "smuggled" into the compiled cgo binary. An attacker could exploit this to embed and execute arbitrary...

encoding/asn1: Parsing DER payload can cause memory exhaustion in encoding/asn1

A memory exhaustion flaw has been discovered in the golang encoding/asn1 module. Within parseSequenceOf, reflect.MakeSlice is being used to pre-allocate a slice that is needed in order to fully validate the given DER payload. The size of the slice allocated are also multiple times larger than the...

encoding/pem: Quadratic complexity when parsing some invalid inputs in encoding/pem

A potential denial of service flaw has been discovered in the golang encoding/pem module. Due to the design of the PEM parsing function, the processing time for some inputs scales non-linearly with respect to the size of the input. This affects programs which parse untrusted PEM inputs and may...

cmd/go: cmd/go: Local code execution and arbitrary file write via malicious module version strings

A flaw was found in Golang's cmd/go module. This vulnerability allows a local attacker to achieve local code execution by downloading and building modules with specially crafted malicious version strings. On systems with Mercurial hg installed, this can occur when downloading modules from...

golang: cmd/compile: possible memory corruption after bound check elimination

A flaw was found in the cmd/compile package in the Go standard library. The compiler fails to correctly check for integer overflow or underflow in arithmetic operations involving loop induction variables. As a result, the compiler allows invalid memory indexing to occur at runtime, potentially...

golang: cmd/compile: no-op interface conversion bypasses overlap checking

A flaw was found in the cmd/compile package in the Go standard library. A no-op interface conversion prevented the compiler from correctly identifying non-overlapping memory moves. As a result, the compiler allows unsafe memory move operations to occur at runtime, potentially causing data...

os: os: Information disclosure via path traversal using specially crafted filenames

A path traversal vulnerability has been identified in the Go os package affecting the Root abstraction, where improper handling of trailing path separators could allow access to the parent directory of a configured root directory. By supplying a filename ending in "../", an attacker may be able t...

archive/tar: golang: Go's archive/tar package: Denial of Service via maliciously-crafted archive

A flaw was found in Go's archive/tar package. A remote attacker could exploit this vulnerability by providing a maliciously-crafted archive file. When the tar.Reader processes an archive containing a large number of sparse regions in the "old GNU sparse map" format, it can lead to unbounded memor...

crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages

A flaw was found in the crypto/tls package within the Go golang standard library, specifically affecting TLS 1.3 connections. A remote attacker can exploit this vulnerability by sending multiple key update messages in a single record after the handshake. This can cause the connection to deadlock,...

crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate

A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the HostnameError.Error function. This flaw, caused by unbounded string concatenation, leads to excessive resource...

os: FileInfo can escape from a Root in golang os module

A path traversal flaw has been discovered in the golang os module. On Unix platforms, when listing the contents of a directory using File.ReadDir or File.Readdir the returned FileInfo could reference a file outside of the Root in which the File was opened. The impact of this escape is limited to...

golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root

A flaw was found in the internal/syscall/unix package in the Go standard library. If the target of the Root.Chmod function is replaced with a symbolic link during execution, specifically after Root.Chmod checks the target but before acting, the chmod operation will be performed on the file the...

CVE-2026-4660

A flaw was found in the go-getter library. A remote attacker could exploit this vulnerability by providing a maliciously crafted URL during certain git operations. This could allow the attacker to perform arbitrary file reads on the file system, potentially leading to the disclosure of sensitive...

CVE-2026-39882

A flaw was found in OpenTelemetry-Go. The otlp HTTP exporters read the full HTTP response body into an in-memory buffer without a size cap. A remote attacker, by controlling the collector endpoint or performing a man-in-the-middle MITM attack on the exporter connection, can exploit this to cause...

CLEANSTART-2026-NZ97711 gRPC-Go is the Go language implementation of gRPC

Security vulnerability affects the kubo package. gRPC-Go is the Go language implementation of gRPC...

CLEANSTART-2026-YW98740 gRPC-Go is the Go language implementation of gRPC

Multiple security vulnerabilities affect the spire-server package. gRPC-Go is the Go language implementation of gRPC. See references for individual vulnerability details...

CLEANSTART-2026-SH14815 gRPC-Go is the Go language implementation of gRPC

Multiple security vulnerabilities affect the tkn-fips package. gRPC-Go is the Go language implementation of gRPC. See references for individual vulnerability details...

CLEANSTART-2026-CD13174 gRPC-Go is the Go language implementation of gRPC

Multiple security vulnerabilities affect the prometheus package. gRPC-Go is the Go language implementation of gRPC. See references for individual vulnerability details...