php-league-commonmark: League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Ma...
CVE-2026-105829 is fixed in php-league-commonmark on 1 platform by DEBIAN-CVE-2026-105829 (version 2.10.3-1), released October 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.
League CommonMark from 1.3.0 before 2.10.2 contains a cross-site scripting vulnerability that allows users posting Markdown to bypass the DisallowedRawHtml extension by ending raw HTML with a bare disallowed tag name. Attackers can place a lone <script or <iframe line followed by a block supplying attributes like src or onload, executing stored scripts in viewers' browsers under default GFM settings.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| php-league-commonmark · Debian 14 | 2.10.3-1 | DEBIAN-CVE-2026-105829 | Oct 10, 2026 |
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