CVE-2026-30838
1 advisory.
Packagist/league/commonmark CVE-2026-30838: medium
CommonMark has DisallowedRawHtml extension bypass via whitespace in HTML tag names
Action: Upgrade league/commonmark to 2.8.1 or later.
composer require league/commonmark:2.8.1Affected
| introduced | fixed | last affected |
|---|---|---|
| 2.0.0 | 2.8.1 | - |
Fixed versions
| 2.8.1 |
Sources
- osv: GHSA-4v6x-c7xx-hw9f
- https://github.com/thephpleague/commonmark/security/advisories/GHSA-4v6x-c7xx-hw9f
- https://nvd.nist.gov/vuln/detail/CVE-2026-30838
- https://commonmark.thephpleague.com/extensions/disallowed-raw-html
- https://github.com/thephpleague/commonmark
CVE-2026-30838 · published · modified · JSON