Linux Distros Unpatched Vulnerability : CVE-2026-105829

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml...

DEBIAN-CVE-2026-105829

League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone script or iframe line followed by a block supplying...

CVE-2026-105829

League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone script or iframe line followed by a block supplying...

UBUNTU-CVE-2026-105829

League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone script or iframe line followed by a block supplying...

CVE-2026-105829

League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone script or iframe line followed by a block supplying...

CVE-2026-105829

The League CommonMark library (versions 1.3.0 before 2.10.2 ) is vulnerable to a Stored Cross-Site Scripting (XSS) flaw. The root cause is a bypass in the DisallowedRawHtml extension, where an attacker can evade restrictions by ending a raw HTML tag with a bare disallowed tag name. By placing a l...

EUVD-2026-95016

League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone script or iframe line followed by a block supplying...

CVE-2026-105829 League CommonMark 1.3.0 before 2.10.2 Stored XSS via DisallowedRawHtml Bypass

League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone script or iframe line followed by a block supplying...

CVE-2026-105829

League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone script or iframe line followed by a block supplying...

CVE-2026-105829 League CommonMark 1.3.0 before 2.10.2 Stored XSS via DisallowedRawHtml Bypass

League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone script or iframe line followed by a block supplying...

CVE-2026-105829: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone...

GHSA-97JJ-33GV-5XF9 league/commonmark: DisallowedRawHtml bypassed when a disallowed tag name ends the raw-HTML literal

Summary The DisallowedRawHtml extension does not escape a disallowed tag when the tag name is the last thing in the raw HTML. A Markdown line containing just /i The trailing character class requires one character after the tag name. The block parser does not: RegexHelper::PARTIALHTMLBLOCKOPEN...

league/commonmark: DisallowedRawHtml bypassed when a disallowed tag name ends the raw-HTML literal

Summary The DisallowedRawHtml extension does not escape a disallowed tag when the tag name is the last thing in the raw HTML. A Markdown line containing just /i The trailing character class requires one character after the tag name. The block parser does not: RegexHelper::PARTIALHTMLBLOCKOPEN...

PT-2026-107988

Name of the Vulnerable Software and Affected Versions League CommonMark versions 1.3.0 through 2.10.1 Description An issue exists where users posting Markdown can bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. This allows attackers to insert a lone scri...

CVE-2026-30838: Improper Neutralization of Input During Web Page Generation

league/commonmark is a PHP Markdown parser. Prior to version 2.8.1, the DisallowedRawHtml extension can be bypassed by inserting a newline, tab, or other ASCII whitespace character between a disallowed HTML tag name and the closing . For example,...

commonmark Cross-Site Scripting Vulnerability

Commonmark is a highly scalable PHP Markdown parser developed by The League of Extraordinary Packages. It fully supports the CommonMark and GFM specifications. Versions of Commonmark prior to 2.8.1 had a cross-site scripting vulnerability. This vulnerability stemmed from the DisallowedRawHtml...