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openSUSE-SU-2026:21480-1

Опубликовано: 30 июл. 2026
Источник: suse-cvrf

Описание

Security update for mcphost

This update for mcphost fixes the following issues:

  • CVE-2026-5160: github.com/yuin/goldmark/renderer: Cross-site Scripting due to improper URL validation (bsc#1272488).
  • CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266572).
  • CVE-2026-56852: golang.org/x/text/unicode/norm: infinite loop on truncated/invalid UTF-8 input (bsc#1272131).

Список пакетов

openSUSE Leap 16.0
mcphost-0.34.0-160000.3.1
mcphost-bash-completion-0.34.0-160000.3.1
mcphost-fish-completion-0.34.0-160000.3.1
mcphost-zsh-completion-0.34.0-160000.3.1

Ссылки

Описание

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 package. For example, a program which performs privilege checks on the ASCII hostname may reject "example.com" but permit "xn--example-.com". If that program subsequently converts the ASCII hostname to Unicode, it will inadvertently permits access to the Unicode name "example.com".

Затронутые продукты
openSUSE Leap 16.0:mcphost-0.34.0-160000.3.1
openSUSE Leap 16.0:mcphost-bash-completion-0.34.0-160000.3.1
openSUSE Leap 16.0:mcphost-fish-completion-0.34.0-160000.3.1
openSUSE Leap 16.0:mcphost-zsh-completion-0.34.0-160000.3.1
Ссылки

Описание

Versions of the package github.com/yuin/goldmark/renderer/html before 1.7.17 are vulnerable to Cross-site Scripting (XSS) due to improper ordering of URL validation and normalization. The renderer validates link destinations using a prefix-based check (IsDangerousURL) before resolving HTML entities. This allows an attacker to bypass protocol filtering by encoding dangerous schemes using HTML5 named character references. For example, a payload such as javascript:alert(1) is not recognized as dangerous during validation, leading to arbitrary script execution in the context of applications that render the URL.

Затронутые продукты
openSUSE Leap 16.0:mcphost-0.34.0-160000.3.1
openSUSE Leap 16.0:mcphost-bash-completion-0.34.0-160000.3.1
openSUSE Leap 16.0:mcphost-fish-completion-0.34.0-160000.3.1
openSUSE Leap 16.0:mcphost-zsh-completion-0.34.0-160000.3.1
Ссылки

Описание

A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.

Затронутые продукты
openSUSE Leap 16.0:mcphost-0.34.0-160000.3.1
openSUSE Leap 16.0:mcphost-bash-completion-0.34.0-160000.3.1
openSUSE Leap 16.0:mcphost-fish-completion-0.34.0-160000.3.1
openSUSE Leap 16.0:mcphost-zsh-completion-0.34.0-160000.3.1
Ссылки