CVE-2018-20583

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 attackers to insert unsafe URLs into HTML even if allowunsafelinks is false via a newline character e.g., writing javascript as javascri%0apt...

CVE-2019-10010

Cross-site scripting XSS vulnerability in the PHP League CommonMark library before 0.18.3 allows remote attackers to insert unsafe links into HTML by using double-encoded HTML entities that are not properly escaped during rendering, a different vulnerability than CVE-2018-20583...

Cross-site Scripting (XSS)

league/commonmark is vulnerable to Cross-site Scripting XSS. The vulnerability is due to insufficient sanitization due to the Attributes extension allowing arbitrary HTML attribute injection through Markdown syntax, bypassing existing XSS protections...

GHSA-3527-QV2Q-PFVX league/commonmark contains a XSS vulnerability in Attributes extension

Summary Cross-site scripting XSS vulnerability in the Attributes extension of the league/commonmark library versions 1.5.0 through 2.6.x allows remote attackers to insert malicious JavaScript calls into HTML. Details The league/commonmark library provides configuration options such as htmlinput:...

DEBIAN-CVE-2025-46734

league/commonmark is a PHP Markdown parser. A cross-site scripting XSS vulnerability in the Attributes extension of the league/commonmark library versions 1.5.0 through 2.6.x allows remote attackers to insert malicious JavaScript calls into HTML. The league/commonmark library provides configurati...

CVE-2025-46734

league/commonmark is a PHP Markdown parser. A cross-site scripting XSS vulnerability in the Attributes extension of the league/commonmark library versions 1.5.0 through 2.6.x allows remote attackers to insert malicious JavaScript calls into HTML. The league/commonmark library provides configurati...

UBUNTU-CVE-2025-46734

league/commonmark is a PHP Markdown parser. A cross-site scripting XSS vulnerability in the Attributes extension of the league/commonmark library versions 1.5.0 through 2.6.x allows remote attackers to insert malicious JavaScript calls into HTML. The league/commonmark library provides configurati...

CVE-2025-46734

CVE-2025-46734 affects the PHP Markdown parser league/commonmark, specifically the Attributes extension (versions 1.5.0–2.6.x). The vulnerability allows injection of dangerous HTML attributes via Markdown syntax (e.g., curly braces) that can bypass HTML sanitization settings. Version 2.7.0 mitiga...

CVE-2025-46734 league/commonmark Cross-site Scripting vulnerability in Attributes extension

league/commonmark is a PHP Markdown parser. A cross-site scripting XSS vulnerability in the Attributes extension of the league/commonmark library versions 1.5.0 through 2.6.x allows remote attackers to insert malicious JavaScript calls into HTML. The league/commonmark library provides configurati...

CVE-2025-46734 league/commonmark Cross-site Scripting vulnerability in Attributes extension

league/commonmark is a PHP Markdown parser. A cross-site scripting XSS vulnerability in the Attributes extension of the league/commonmark library versions 1.5.0 through 2.6.x allows remote attackers to insert malicious JavaScript calls into HTML. The league/commonmark library provides configurati...

CVE-2025-46734 league/commonmark Cross-site Scripting vulnerability in Attributes extension

league/commonmark is a PHP Markdown parser. A cross-site scripting XSS vulnerability in the Attributes extension of the league/commonmark library versions 1.5.0 through 2.6.x allows remote attackers to insert malicious JavaScript calls into HTML. The league/commonmark library provides configurati...

CVE-2025-46734

league/commonmark is a PHP Markdown parser. A cross-site scripting XSS vulnerability in the Attributes extension of the league/commonmark library versions 1.5.0 through 2.6.x allows remote attackers to insert malicious JavaScript calls into HTML. The league/commonmark library provides configurati...

PT-2025-19795 · Unknown +1 · League/Commonmark +1

Name of the Vulnerable Software and Affected Versions: league/commonmark versions 1.5.0 through 2.6.x Description: A cross-site scripting XSS vulnerability in the Attributes extension of the league/commonmark library allows remote attackers to insert malicious JavaScript calls into HTML. The...

commonmark 跨站脚本漏洞

commonmark is a highly extensible PHP Markdown parser open-sourced by The League of Extraordinary Packages, with full support for the CommonMark and GFM specifications. A cross-site scripting vulnerability exists in commonmark versions 1.5.0 through 2.6.x. The vulnerability stems from the...

GHSA-8G2J-RHFH-HQ3R org.xwiki.contrib.markdown:syntax-markdown-commonmark12 vulnerable to XSS via Markdown content

Impact The Markdown syntax is vulnerable to XSS through HTML. In particular, using Markdown syntax, it's possible for any user to embed Javascript code that will then be executed on the browser of any other user visiting either the document or the comment that contains it. In the instance that th...

org.xwiki.contrib.markdown:syntax-markdown-commonmark12 vulnerable to XSS via Markdown content

Impact The Markdown syntax is vulnerable to XSS through HTML. In particular, using Markdown syntax, it's possible for any user to embed Javascript code that will then be executed on the browser of any other user visiting either the document or the comment that contains it. In the instance that th...

PT-2025-35305 · Unknown +1 · Mixmark-Io Turndown +1

Name of the Vulnerable Software and Affected Versions: mixmark-io turndown versions through 7.2.1 Description: A security flaw exists in mixmark-io turndown, potentially leading to inefficient regular expression complexity through manipulation of an unknown function within the...

Inefficient Algorithmic Complexity

Overview league/commonmark is a PHP-based Markdown parser which supports the full CommonMark spec. It is based on the CommonMark JS reference implementation. Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity through the parsing of specially crafted Markdown...

PT-2024-40232 · League Of Extraordinary Packages · League/Commonmark

Name of the Vulnerable Software and Affected Versions: league/commonmark versions prior to 2.6.0 Description: The issue is related to polynomial time complexity problems in the league/commonmark library, which can lead to unbounded resource exhaustion and denial of service. Malicious users can...

Fedora: Security Advisory for rust-comrak (FEDORA-2024-40ee18b2e7)

The remote host is missing an update for the SPDX-FileCopyrightText: 2024 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...