crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building

A flaw was found in the Go standard library packages crypto/x509 and crypto/tls. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being...

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: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building

A flaw was found in the Go standard library packages crypto/x509 and crypto/tls. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being...

crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation

A flaw was found in Go's crypto/x509 package. A remote attacker could exploit this by presenting a specially crafted certificate chain containing a large number of policy mappings. This inefficient validation process consumes excessive resources, which can lead to a denial of service DoS for...

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,...

Prometheus 跨站脚本漏洞

Prometheus is an open-source software developed in the Go language, used to create real-time metric databases built using the HTTP pull model. Versions of Prometheus from 2.49.0 to 3.5.3, as well as versions before 3.11.3, had a cross-site scripting vulnerability. This vulnerability stemmed from...

The vulnerability of the Go programming language lies in the incorrect definition of the link before accessing a file, which allows attackers to escalate their privileges.

The vulnerability of the Go programming language is related to the incorrect definition of the link before accessing a file. Exploiting this vulnerability can allow an attacker to increase their privileges...

The vulnerability of the Go programming language, which comes with unlimited resource distribution, allows attackers to cause service failures.

The vulnerability of the Go programming language is related to the unlimited distribution of resources. Exploiting this vulnerability can allow a remote attacker to cause service interruptions...

The vulnerability of the Go programming language, related to errors in type mixing, allows attackers to execute arbitrary code.

The vulnerability of the Go programming language is related to type mixing errors. Exploiting this vulnerability can allow an attacker to execute arbitrary code...

The vulnerability of the Golang programming language, related to deficiencies in authentication mechanisms, allows attackers to gain unauthorized access to protected information.

The vulnerability of the Go programming language is related to deficiencies in the authentication mechanism. Exploiting this vulnerability can allow an attacker, operating remotely, to gain unauthorized access to protected information...

GO-2026-5024 Invoking integer overflow in NewNTUnicodeString in golang.org/x/sys/windows

NewNTUnicodeString does not check for string length overflow. When provided with a string that overflows the maximum size of a NTUnicodeString a 16-bit number of bytes, it returns a truncated string rather than an error...

Cross-site Scripting (XSS)

Overview github.com/golang/net/html is a package that implements an HTML5-compliant tokenizer and parser. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the readStartTag function in the Tokenizer. An attacker can cause the execution of scripts in the context of t...

Cross-site Scripting (XSS)

Overview golang.org/x/net/html is a package that implements an HTML5-compliant tokenizer and parser. Affected versions of this package are vulnerable to Cross-site Scripting XSS via the readStartTag function in the Tokenizer. An attacker can cause the execution of scripts in the context of the...

Cross-site Scripting (XSS)

Overview github.com/golang/net/html is a package that implements an HTML5-compliant tokenizer and parser. Affected versions of this package are vulnerable to Cross-site Scripting XSS in the inBodyEndTagOther function, when rendering sanitized HTML. An attacker can cause the execution of scripts i...

Improper Authentication

Overview Affected versions of this package are vulnerable to Improper Authentication via the ToASCII and ToUnicode functions. An attacker can bypass hostname validation by submitting Punycode-encoded labels that decode to ASCII-only labels, potentially leading to privilege escalation in...

CVE-2026-27136

CVE-2026-27136 affects golang.org/x/net/html. The issue arises when parsing HTML and rendering via Render, yielding an unexpected HTML tree due to duplicate attributes, which can enable XSS in applications that sanitize input HTML before rendering. The connected docs specify the vulnerability inv...

CVE-2026-42506 Invoking incorrect handling of namespaced elements in foreign content in golang.org/x/net/html

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering...

CVE-2026-39821 Invoking failure to reject ASCII-only Punycode-encoded labels in golang.org/x/net/idna

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode"xn--example-.com" incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna...

Uncaught Exception

Overview golang.org/x/crypto/ssh is a SSH client and server Affected versions of this package are vulnerable to Uncaught Exception in the CertChecker component when used as a public key callback without setting IsUserAuthority or IsHostAuthority. An attacker can cause the server to panic by...

GO-2026-5029 Invoking incorrect handling of character references in DOCTYPE nodes in golang.org/x/net/html

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering...