CVE-2026-71478

league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 1.5.0 until 2.9.0, the AttributesExtension's href and src unsafe-link filter can be bypassed by embedding control bytes, such as a tab, carriage return, line feed, or leading C0 control character, in a...

UBUNTU-CVE-2026-71478

league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 1.5.0 until 2.9.0, the AttributesExtension's href and src unsafe-link filter can be bypassed by embedding control bytes, such as a tab, carriage return, line feed, or leading C0 control character, in a...

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

Summary The AttributesExtension's href/src unsafe-link filter AttributesHelper::filterAttributes can be bypassed by embedding control bytes in a javascript: URL that browsers discard before parsing the scheme. Two variants: - Tab/newline inside the scheme — a literal ASCII TAB 0x09, CR 0x0D, or...

GHSA-29PJ-957V-52MC league/commonmark: AttributesExtension href/src unsafe-link filter bypass via embedded control bytes

Summary The AttributesExtension's href/src unsafe-link filter AttributesHelper::filterAttributes can be bypassed by embedding control bytes in a javascript: URL that browsers discard before parsing the scheme. Two variants: - Tab/newline inside the scheme — a literal ASCII TAB 0x09, CR 0x0D, or...

CVE-2026-71478

league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 1.5.0 until 2.9.0, the AttributesExtension's href and src unsafe-link filter can be bypassed by embedding control bytes, such as a tab, carriage return, line feed, or leading C0 control character, in a...

CVE-2026-71478 league/commonmark: AttributesExtension href/src unsafe-link filter bypass via embedded control bytes

league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 1.5.0 until 2.9.0, the AttributesExtension's href and src unsafe-link filter can be bypassed by embedding control bytes, such as a tab, carriage return, line feed, or leading C0 control character, in a...

CVE-2026-71478

Summary. league/commonmark 1.5.0–2.8.3 is vulnerable due to the AttributesExtension href/src unsafe-link filter bypass when control bytes are embedded in a javascript: URL. The browser may execute the script after the URL is parsed, even with allow_unsafe_links enabled. The issue is caused by ins...

CVE-2026-71478 league/commonmark: AttributesExtension href/src unsafe-link filter bypass via embedded control bytes

league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 1.5.0 until 2.9.0, the AttributesExtension's href and src unsafe-link filter can be bypassed by embedding control bytes, such as a tab, carriage return, line feed, or leading C0 control character, in a...

EUVD-2026-54261

league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 1.5.0 until 2.9.0, the AttributesExtension's href and src unsafe-link filter can be bypassed by embedding control bytes, such as a tab, carriage return, line feed, or leading C0 control character, in a...

CVE-2026-71478 league/commonmark: AttributesExtension href/src unsafe-link filter bypass via embedded control bytes

league/commonmark is a PHP library for parsing and rendering CommonMark Markdown. From 1.5.0 until 2.9.0, the AttributesExtension's href and src unsafe-link filter can be bypassed by embedding control bytes, such as a tab, carriage return, line feed, or leading C0 control character, in a...

EUVD-2025-13411

Malicious code in bioql PyPI...

Linux Distros Unpatched Vulnerability : CVE-2025-46734

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

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...

Cross-site Scripting (XSS)

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 Cross-site Scripting XSS via the AttributesExtension. If the Attributes extension is in...

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:...

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...