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VULNERABILITIES

CVE-2026-56709 Details

UNDERGOING ENRICHMENT

The CVE is currently being enriched by the Volerion team. The enrichment process results in the association of reference link tags, CVSS, and CPE applicability statement data.

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.
CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://github.com/getgrav/grav/security/advisories/GHSA-69vf-mjxw-x79j [email protected]
https://www.vulncheck.com/advisories/grav-before-host-header-injection-via-sendinvitationemail [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-350Reliance on Reverse DNS Resolution for a Security-Critical Action[email protected]

Affected Products

This vulnerability is currently being analyzed

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-56709
NVD Published Date:
Aug 25, 2026
NVD Last Modified:
Aug 31, 2026
Source:
[email protected]
CVE-2026-56709 Details - Not Deferred