CVE-2026-56709 — Grav before 3.9.2 Host Header Injection via sendInvitationEmail
Grav before 3.9.2 fails to validate untrusted Host headers in the sendInvitationEmail() function when constructing token-bearing invitation links. Attackers can manipulate the H…
Published: 2026-08-25 · CVSS: 8.7 · CVSS 4.0
Grav before 3.9.2 fails to validate untrusted Host headers in the sendInvitationEmail() function when constructing token-bearing invitation links. Attackers can manipulate the Host header to poison invitation links and redirect users to attacker-controlled domains, bypassing the require_trusted_host protection which only covers password reset flows.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7