CVE-2026-56708
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Aug 25, 2026
Vendor
unknown
Description
Grav API plugin before 1.0.16 contains a server-side request forgery vulnerability in webhook delivery that allows attackers to bypass hostname validation by DNS rebinding. Attackers controlling authoritative DNS for a configured webhook hostname can answer validation lookups with public addresses and delivery lookups with private addresses to reach internal network resources.