medium6.1
CVE-2026-105829
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 ext…
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| League CommonMark From 1.3.0 | before 2.10.2 |
Versions were read from the advisory text. No structured product data has been published for this record yet.