Server-side request forgery (SSRF) In league/commonmark
Description
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.
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Ecosystem | Package | Affected version | Patched versions |
|---|---|---|---|
 packagist | league/commonmark | 2.8.2 | |
 debian 14 | php-league-commonmark | 2.8.2-1 | |
debian 11 | php-league-commonmark | - | |
debian 12 | php-league-commonmark | - | |
debian 13 | php-league-commonmark | - |
Aliases