league/commonmark has an embed extension allowed_domains bypass
概要
league/commonmark has an embed extension allowed_domains bypass
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
league/commonmark is a PHP Markdown parser. From version 2.3.0 to before version 2.8.2, the DomainFilteringAdapter in the Embed extension is vulnerable to an allowlist bypass due to a missing hostname boundary assertion in the domain-matching regex. An attacker-controlled domain like youtube.com.evil passes the allowlist check when youtube.com is an allowed domain. This issue has been patched in version 2.8.2.
出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Debian DEBIAN-CVE-2026-33347 php-league-commonmark
- Ubuntu UBUNTU-CVE-2026-33347 php-league-commonmark 修正版: 1.3.1-1ubuntu2+esm1
参照URL
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com
- web github.com