League/commonmark: Denial Of Service Via Colliding Heading Slugs

Impact "UniqueSlugNormalizer::normalize" makes each slug document-unique by searching for an unused numeric suffix, but restarts that search from "1" on every collision. The k-th heading that collapses to the same base slug performs k−1 array lookups, so K colliding slugs cost Σk−1 = OK². An...

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...

Linux Distros Unpatched Vulnerability : CVE-2026-105830

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 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's...

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...

DEBIAN-CVE-2026-105830

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters,...

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-2026-105830

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters,...

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-2026-105830

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters,...

UBUNTU-CVE-2026-105830

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters,...

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...

EUVD-2026-95017

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters,...

CVE-2026-105830 league/commonmark 2.0.0 before 2.10.2 Quadratic DoS via TableStartParser

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters,...

CVE-2026-105830 league/commonmark 2.0.0 before 2.10.2 Quadratic DoS via TableStartParser

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters,...

CVE-2026-105830

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters,...

CVE-2026-105830 league/commonmark 2.0.0 before 2.10.2 Quadratic DoS via TableStartParser

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters,...

CVE-2026-105830

The league/commonmark library (versions 2.0.0 before 2.10.2 ) is vulnerable to a quadratic-time denial of service (DoS) attack within the GitHub Flavored Markdown Table extension. The issue resides in the TableStartParser::tryStart() block-start scan, where unauthenticated attackers can submit a ...

CVE-2026-105830

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters,...

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 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...