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CVE PROGRAM SOURCE RECORD4.8 Medium

CVE-2026-55890

Grav: Stored CSS injection via Markdown image ?style=… reaches MediaObjectTrait::style()

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

getgrav grav

  • < 2.0.0-rc.9affected

References