chore(deps): update dependency league/commonmark to v2.8.1 [security]#1452
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This PR contains the following updates:
2.8.0→2.8.1GitHub Vulnerability Alerts
CVE-2026-30838
Impact
The
DisallowedRawHtmlextension can be bypassed by inserting a newline, tab, or other ASCII whitespace character between a disallowed HTML tag name and the closing>. For example,<script\n>would pass through unfiltered and be rendered as a valid HTML tag by browsers. This is a cross-site scripting (XSS) vector for any application that relies on this extension to sanitize untrusted user input.All applications using the
DisallowedRawHtmlextension to process untrusted markdown are affected. Applications that use a dedicated HTML sanitizer (such as HTML Purifier) on the rendered output are not affected.Patches
Fixed in 2.8.1. The regex character class
[ \/>]was changed to[\s\/>]to match all whitespace characters that browsers accept as valid tag name terminators.Workarounds
html_inputconfiguration option to'escape'or'strip'to disable all raw HTML, though this is a broader restriction than theDisallowedRawHtmlextension provides.Resources
Release Notes
thephpleague/commonmark (league/commonmark)
v2.8.1Compare Source
This is a security release to address an issue where
DisallowedRawHtmlcan be bypassed, resulting in a possible cross-site scripting (XSS) vulnerability.Fixed
DisallowedRawHtmlRenderernot blocking raw HTML tags with trailing ASCII whitespace (GHSA-4v6x-c7xx-hw9f)Configuration
📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
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