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...

CVE-2026-46598 Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent

For certain crafted inputs, a 'ed25519.PrivateKey' was created by casting malformed wire bytes, leading to a panic when used...

CVE-2026-39834 Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh

When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress. The size comparison now uses int64 to prevent truncation...

CVE-2026-39827 Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh

An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for...

CVE-2026-39830 Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close, resulting in a resource leak per connection. Unsolicited global responses are now discarded...

CVE-2026-39828 Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh

When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError...

GO-2026-5020 Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh

When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress. The size comparison now uses int64 to prevent truncation...

GO-2026-5014 Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh

When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError...

GO-2026-5015 Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil...

RockyLinux 10 : image-builder (RLSA-2026:3840)

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:3840 advisory. crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate CVE-2025-61729 golang: net/url: Memory exhaustion i...

Google Go 安全漏洞

Google Go is a static, strongly typed, compiled, concurrent programming language with garbage collection features from the American company Google. There is a security vulnerability in Google Go, which occurs when using CertChecker as a public key callback without setting IsUserAuthority or IsHos...

RLSA-2026:1838 Moderate: image-builder security update

A local binary for building customized OS artifacts such as VM images and OSTree commits. Uses osbuild under the hood. Security Fixes: golang: archive/tar: Unbounded allocation when parsing GNU sparse map CVE-2025-58183 For more details about the security issues, including the impact, a CVSS scor...

osbuild-composer security update

An update is available for osbuild-composer. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list A service for building customized OS artifacts, such as VM images an...

RLSA-2026:1380 Moderate: osbuild-composer security update

A service for building customized OS artifacts, such as VM images and OSTree commits, that uses osbuild under the hood. Besides building images for local usage, it can also upload images directly to cloud. It is compatible with composer-cli and cockpit-composer clients. Security Fixes: golang:...