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Permalink CVE-2026-55890
4.8 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): High (H)
  • User Interaction (UI): Required (R)
  • Scope (S): Changed (C)
  • Confidentiality (C): Low (L)
  • Integrity (I): Low (L)
  • Availability (A): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): High (H)
  • Modified User Interaction (MUI): Required (R)
  • Modified Confidentiality (MC): Low (L)
  • Modified Scope (MS): Changed (C)
  • Modified Integrity (MI): Low (L)
  • Modified Availability (MA): None (N)
created 2 months, 1 week ago Activity log
  • Created suggestion 2 months, 1 week ago
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 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

grav
  • ==< 2.0.0-rc.9

Matching in nixpkgs

pkgs.grav

Fast, simple, and flexible, file-based web platform

  • nixos-unstable -
  • nixos-26.05 -

pkgs.grav_2

Fast, simple, and flexible, file-based web platform

  • nixos-unstable -
    • nixos-unstable-small 2.1.8

pkgs.gravit

Beautiful OpenGL-based gravity simulator

  • nixos-unstable -
    • nixos-unstable-small 0.5.1
  • nixos-26.05 -
    • nixos-26.05-small 0.5.1

pkgs.antigravity

Agentic development platform, evolving the IDE into the agent-first era

  • nixos-unstable -
    • nixos-unstable-small 2.5.5
  • nixos-26.05 -

pkgs.antigravity-acp

Google's AI coding agent. Official ACP server powered by Antigravity

  • nixos-unstable -
    • nixos-unstable-small 1.1.1

pkgs.antigravity-cli

Google's Go-based terminal user interface (TUI) agent client

  • nixos-unstable -
    • nixos-unstable-small 1.2.3

pkgs.antigravity-fhs

Wrapped variant of antigravity-ide which launches in a FHS compatible environment, should allow for easy usage of extensions without nix-specific modifications

  • nixos-unstable -
    • nixos-unstable-small 2.5.5
  • nixos-26.05 -

pkgs.antigravity-hub

Desktop environment for managing multiple autonomous agents across independent projects

  • nixos-unstable -

pkgs.antigravity-ide

Agentic development platform, evolving the IDE into the agent-first era

  • nixos-unstable -
    • nixos-unstable-small 2.5.5

pkgs.antigravity-ide-fhs

Wrapped variant of antigravity-ide which launches in a FHS compatible environment, should allow for easy usage of extensions without nix-specific modifications

  • nixos-unstable -
    • nixos-unstable-small 2.5.5

pkgs.stardust-xr-gravity

Utility to launch apps and stardust clients at an offset

  • nixos-unstable -
  • nixos-26.05 -

pkgs.bulwark-plugins.gravatar

Resolves Gravatar profile pictures for email contacts via the avatar transform hook

  • nixos-unstable -
    • nixos-unstable-small 1.3.1

pkgs.gnomeExtensions.gravatar

Synchronize GNOME Shell user icon with an avatar service, one of Gravatar or Libravatar.

  • nixos-unstable -
    • nixos-unstable-small 10
  • nixos-26.05 -
    • nixos-26.05-small 10

pkgs.porting-advisor-for-graviton

AWS Porting Advisor for Graviton helps customers assess and prepare their applications for migration to AWS Graviton processors

  • nixos-unstable -
    • nixos-unstable-small 1.1.1