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league/commonmark

15 known vulnerabilities (7 high, 6 medium), with the versions each affects and the releases that fix them.

Latest release
Not known: cve.now hasn't read this package's releases
Newest unaffected release
Not known without release data
Advisories
15 · 7 high, 6 medium
Registry
Packagist

Advisories 15

  • league/commonmark 2.0.0 before 2.10.2 Quadratic DoS via TableStartParser

    Affected: from 2.0.0, fixed in 2.10.2.

  • CVE-2026-105829Medium 5.3

    League CommonMark 1.3.0 before 2.10.2 Stored XSS via DisallowedRawHtml Bypass

    Affected: from 1.3.0, fixed in 2.10.2.

  • league/commonmark before 2.6.0 Denial of Service via Quadratic Complexity

    Affected: fixed in 2.6.0.

  • commonmark 2.0.0 through 2.8.3 Denial of Service via Slug Collision

    Affected: from 2.0.0, fixed in 2.9.0.

  • CVE-2026-86431Medium 6.9

    commonmark before 2.9.1 XSS via AttributesExtension form feed bypass

    Affected: from 2.7.0, fixed in 2.9.1.

  • league/commonmark before 2.9.1 Denial of Service via parsing

    Affected: from 0.6.0, fixed in 2.9.1.

  • commonmark before 2.9.1 Denial of Service via SmartPunct and Attributes

    Affected: from 1.5.0, fixed in 2.9.1.

  • commonmark 1.5.0 before 2.10.0 Denial of Service via Attributes

    Affected: from 1.5.0, fixed in 2.10.0.

  • league/commonmark: Quadratic-time denial of service when parsing crafted Markdown

    Affected: from 0.6.0, fixed in 2.9.0.

  • CVE-2026-71478Medium 6.1

    league/commonmark: AttributesExtension href/src unsafe-link filter bypass via embedded control bytes

    Affected: from 1.5.0, fixed in 2.9.0.

  • CVE-2026-33347Medium 6.3

    league/commonmark has an embed extension allowed_domains bypass

    Affected: from 2.3.0, fixed in 2.8.2.

  • CVE-2026-30838Medium 5.1

    league/commonmark: DisallowedRawHtml extension bypass via whitespace in HTML tag names

    Affected: from 2.0.0, fixed in 2.8.1.

  • CVE-2025-46734Medium 6.4

    league/commonmark Cross-site Scripting vulnerability in Attributes extension

    Affected: from 1.5.0, fixed in 2.7.0.

  • Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library before 0.18.3 allows remote attackers to insert unsafe links…

    Affected: fixed in 0.18.3.

  • Cross-site scripting (XSS) vulnerability in the PHP League CommonMark library versions 0.15.6 through 0.18.x before 0.18.1 allows remote…

    Affected: from 0.15.6, fixed in 0.18.1.