Veille CVE

Lundi 17 août 2026

1 CVE sur 4

Critique 1 Élevée 0 Moyenne 3 Faible 0 Non évaluée 0 Exploitées (KEV) Tri : plus récentes « Discourse » ✕
  1. CVE-2026-55674 9.3 Critique

    discourse

    Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, an unauthenticated attacker could send a single request with a crafted color_scheme_id (or dark_scheme_id) cookie to inject arbitrary HTML into a Discourse page. Because the cookie value was rendered into a color scheme tag without escaping, the attacker could break out of the attribute and inject a tag that bypassed Discourse's nonce-based Content Security Policy, resulting in arbitrary JavaScript execution in visitors' browsers. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.