CVE-2026-55890 — Grav: Stored CSS injection via Markdown image ?style=… reaches MediaObjectTrait::style()
Grav is a file-based Web platform. Prior to 2.0.0-rc.9, Grav's incomplete fix for stored XSS through the Markdown media attribute action (CVE-2026-42841) leaves the sibling Medi…
Published: 2026-07-10 · CVSS: 4.8 · CVSS 3.1
Grav is a file-based Web platform. Prior to 2.0.0-rc.9, Grav's incomplete fix for stored XSS through the Markdown media attribute action (CVE-2026-42841) leaves the sibling MediaObjectTrait::style method reachable through the same Markdown excerpt-action pipeline, allowing an editor to save Markdown image style parameters that are written into the rendered img style attribute without sanitization. This issue is fixed in version 2.0.0-rc.9.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7