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CVE-2026-56709: grav 0 to before 3.9.2
CVE-2026-56709. CVSS 3.1 base score 7.5 (HIGH, Vendor/CNA). EPSS 0.00434 (percentile 0.3583), scored 11-Oct-2026.
Affected technology
grav · 0 to before 3.9.2
getgrav
Description’s affected range: before 3.9.2 fails to validate untrusted Host headers in the sendInvitationEmail() function when constructing token-bearing invitation links
Component: Not specified by the source
Function: when
Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required
What an attacker can do
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. Vendor/CNA’s CVSS 4.0 assessment (base score 8.7/10) rates confidentiality impact as high; integrity and availability impact as none.
- CWE
- CWE-350
- CCR priority
- 30.1 /100 (P4)
- CVSS 3.1
- 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N · Vendor/CNA
- EPSS
- 0.00434 · percentile 0.3583 · 2026-10-11
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-12 16:54:24.294989+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-56709.html